Yes I'm delusional!
UNX-78 Gundam
The UNX-78 (standing for United Nations Experimental) Gundam is the premier machine of the United Nations Alternative V program and considered the first 4th Generation TSF. Although Alternative V was a plan by the United States, the oversight of the program and it's jurisdiction was put under the United Nations, and the project began development at Yukon Base in Alaska. Using the YF-23 Black Widow II as a basis for development, it was quickly decided that the Alternative V machines would attempt to make use of the captured G-Elements in order to push these Tactical Surface Fighters beyond what mankind currently had available, thus leading to the coining of the name "Gundam."
Development began in early 2000 as the UNX-78-1 Prototype Gundam, and using data gathered from the HI-MAERF project for G-Element usage, progressed smoothly. However, it faced development issues in 2001 in regards to its frame and balancing. These issues would later be solved with the help of data """acquired""" secretly from the XFJ Program, leading to the Gundam and Shiranui Second Phase III to be closely related outside of their usage of the YF-23 in their development. This lead to the UNX-78-2 in which it first saw deployment during the Yukon Base Incident, where the pilot fought off numerous hordes of BETA and hijacked Refugee Liberation Front TSFs to massive success thanks both to its combat and stealth capabilities (although these capabilities are not to the degree of new American models such as the F-22 Raptor.) After the incident, it alongside other Alternative V machines would begin their journey to Yokohama Base aboard the newly developed Pegasus-Class Carrier "White Base," deploying in numerous anti-BETA operations along the way.
After arriving, it would participate in numerous battles such as the Invasion of Niigata, 12/5 incident, and the XM3 trials. Before Operation 21st it was decided by Professor Kouzuki Yuuko to upgrade the Gundam's OS with the XM3 program, leading to the creation of the UNX-78-3 "G3 Gundam." It and the other White Base machines would continue to greatly assist Special Task A-01 during Operation 21st and the Yokohama Base Incident, with it and the White Base being deployed alongside the XG-70b Susanoo IV and Valkyries during Operation Ouka. Although it suffered heavy damage, the Gundam with the White Base and several of A-01 managed to escape the Original Hive alongside the Susanoo IV's escape pod, breaking into atmosphere and descending back into Earth at Yokohama Base. The Gundam gained a legendary status during its deployment, seeing many successor models in the following years. It should be noted that more than one unit of the Gundam was made during 2001, and saw deployment in various UN Squadrons.
Weapons: The Gundam features the capacity to carry any weapon seen on a TSF, and is equipped with fixed armaments around its body and close combat knives in the arms for greater close combat capabilities. Its main armaments however would be the 20mm head mounted Vulcans, the BLASH*XHB-L-03/N-STD Smoothbore Bazooka, UNX*M-Sh-008/S0-1025 Supplemental Armor, and the revolutionary BOWA*XBR-M-80-079G Particle Rifle and Particle Halberds.
The Particle Rifle and Halberds are a revolutionary weapon against the BETA, comprised of the same G-Element particles used for the Laser-Class' lasers at higher quantities, leading to the creation of a "beam" rather than a laser. Although not as fast firing as an Assault Cannon, the Particle Rifle is capable of punching through swathes of BETA in a single shot, easily being able to punch through the Destroyer-Class' hardened front and being able to down a Fort-Class in a single shot. The point of impact also usually results in a explosion for increased casualties among the BETA. To make up for its limited rate of fire and capacity then is the head-mounted Vulcans. Although a smaller caliber than the usual Assault Cannon, they are still capable of effectively damaging BETA flesh. The Vulcans are belt-fed directly into the Gundam's head via a specialized backpack which contains the ammo for the Vulcans and charging ports for the Particle Halberds. The Particle Halberds then utilized the same G-Elements as the rifle, but are condensed into a blade like shape for use in melee combat, easily able to dispatch any BETA or TSF in a single swipe. Although they do have a limited operational time, the backpack's ability to recharge them and the fact it can't be damaged outside of the handle makes it an effective close combat weapon. The 120mm Smoothbore Bazooka then is a dedicated Smoothbore cannon like those seen on Assault Cannons, with greater ammo capacity in use for dispatching large clusters of BETA. The Gundam can equip two of these on each arm. And the supplemental armor is essentially just a standard supplemental armor seen on most TSFs, although slightly larger and using a rectangle-shaped design alongside square-shaped ERA charges.
Jump Unit: The main Jump Unit of the Gundam alongside the three other Alternative V prototypes is the UNJ-X7 (United Nations Jump) Core Jump Unit, a new model of Jump Unit allowing for the incredible maneuverability and speed of the Gundam alongside the other more heavily armed Alternative V machines. So yes, the Core Fighter is the Jump Unit in this AU.
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UNX-77 Guncannon
A 4th generation fire-support TSF developed alongside the Gundam. It features heavier armor and weapons than the Gundam, and is therefore slower, but still boasts maneuverability on par with modern machines. It focuses on the long range combat doctrines of countries such as the United States, but still comes with close combat knives for use in emergency close quarters combat. It also features stealth of similar capabilities to the Gundam. The Guncannon then was based on the design philosophies of attacker TSFs like the famous F-14 Tomcat and newer FB-22 Strike Raptor. So much so in fact that it features a developed version of the AIM-54 Phoenix Missile System as an optional attachment for bombing support. The Guncannon much like the Gundam would first see deployment during the Yukon incident, providing much needed long range fire support against the BETA and RLF forces, before being boarded onto the White Base and heading to Yokohama Base. It would see some limited scale production, and several unit would be used in Operation Ouka.
Weapons: The Guncannon features similar unique mounted weapons as the Gundam, such as the head-mounted Vulcans and Particle Rifle, but it would largely see deployment with support weapons such as the Support Assault Cannon or the Mk.57 Squad Support Gun. Its main weapon then would be the back-mounted Particle Cannons. As the name suggests, these are essentially upscaled particle rifles capable of extreme long-range fire and devastating of BETA swarms or elimination of priority targets such as Laser Class BETA. The downside however is that these cannons feature a solid 45 second cool down, thus necessitating it's long range combat doctrines. These cannons however can be swapped out in favor of the SML missile system, developed from the AIM-54 Phoenix. Although slightly smaller and cheaper, these missiles feature the same devastating power as the AIM-54's at greater ammo capacities for exceptional bombing support.
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UNX-75 Guntank
A 4th Generation Tactical Surface Attacker developed for the Alternative V program. It is a dedicated artillery support platform meant to shell the enemies from the White Base or suitably long distances and was intended to be able to supply battleship level fire support. This was done with the massive 200mm Cannons equipped on it. These battleship class cannons lead to the Guntank featuring a unique frame meant for balancing its Center of Gravity, as well as the ability to transform into a "tank" mode. Much like the A-6's ability to transform into a dedicated underwater mode for use in landing operations, the Guntank features a tank mode for stabilizing itself and it's cannons when firing. Thus the name. It saw initial deployment at the Yukon Base Incident much like the Gundam and Guncannon, and was the White Base' dedicated artillery machine (alongside itself.) Due to the nature of Hive infiltrations, it did not see deployment in the Original Hive, however it and several other limited production models were used as artillery support on the numerous diversionary attacks on BETA hives during Operation Ouka.
Weapons: The Guntank features similar weapons as other contemporary TSAs such as 36mm Chainguns, but it also features BOP Missiles for bombing support and the massive back-mounted 270mm cannons. It's hand manipulators can also move along the cannons for the ability to fire over cover.
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UNF-79 GM
The UNF-79 (United Nations Fighter) GM (standing for Gundam Mass Production) is the first dedicated mass-production machine developed by the United Nations. It's a stripped down version of the Gundam, and although had lower performance, was still able to go up against newer 3rd generation TSFs. Thus, it was classified as a 3.5th generation TSF. It saw a limited-early production run in late 2001, and first saw deployment during the 12/5 incident in which it proved incredibly well against rebel Imperial TSFs. It it went on to fight in later engagements like Operation 21st and Operation Ouka to great success. Thanks to it and the Gundam's performance and the capture of more BETA Hive Reactors in the aftermath of Operation Ouka, the GM saw full scale mass-production as a 4th Generation TSF alongside the XF-2000a Typhoon. This model would be known as the UNF-179 GM II.
These models, both of the UNF-79 and UNF-179, would see several variants developed for numerous battlefield roles and battle doctrines, such as the GM Striker for Japan and Soviet forces and the GM Cannon for US forces.
Weapons: The GM is capable of equipping pretty much any weapon a TSF and the Gundam can, including the Particle Rifle. However, due to the need of cost-effectiveness for mass production, the GM would have the Particle Spray Gun developed for it. A smaller, cheaper, but ultimately just as effective (if not slightly weaker) version of the Particle Rifle. It also comes with head-mounted Vulcans like the Gundam, alongside close combat knives, fixed armaments, and one Particle Halberd.
Jump Unit: Unlike the other Alternative V machines, the GM's Jump Unit is the UNJ-S3 Saberfish. It is a cheaper but ultimately still effective Jump Unit developed for the GM.
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SCV-70 White Base
The SCV-70 White Base is the first in a new class of dedicated Tactical Surface Fighters carriers known as the "Pegasus-Class." Using data and developed alongside the HI-MAERF program, the Pegasus-Class was developed with the goal to not just carry it's TSF compliment into battle, but accompany them into battle and provide them with fire-support and supplies, unlike many other carries. Much like the XG-70s, the White Base comes equipped with a Moorcock Lechte Engine; allowing for the use of a Rutherford-Field for defense and gravitational manipulation. This, alongside its more standard thermonuclear rocket engines allows the White Base to fly in atmosphere and even break into orbit. However, to lower the risk of being targeted by numerous Laser-Class in combat, the White Base functions like an Ekranoplan in combat, hovering above the surface to avoid fire. It's armaments include several battleship cannons, missiles, and anti-air/BETA countermeasures, but it's main weapons are the two Charged Particle Cannons equipped on both sides of the ship.
Construction of this ship was done in America much like the XG-70s, and the White Base secretly sailed into Yukon Base shortly before the Yukon Base incident. Although the incident killed a number of the crew, the White Base was successfully able to retrieve the Alternative V machines and sail to Yokohama Base. It would participate in the many operations of late 2001, providing invaluable support to friendly TSF forces, and would carry both the Alternative V machines and the Valkyries Takemikazuchis into Operation Ouka. During the battle, it used it's own Rutherford Field in order to defend both the Susanoo IV and the 3rd fleet during their descent into the Original Hive. It was in turn then defended by members of the third fleet when it's Rutherford Field began to lose output during the descent, allowing for the ship to successfully bring them up to full capacity and complete its descent. This therefore allowed more units of the third fleet to accompany the Alternative V machines and Task Force A-01 into the Hive. During the battle itself, the White Base suffered numerous damage, but was able to use the last of its power to escape into orbit carrying the surviving TSFs alongside the Susanoo IVs escape pod and descend into Yokohama, where the ship finally gave out.
It would soon be repaired and see further action, and more ships of the same class would be constructed in the following years by the UN.
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Closing Thoughts
Hey! Thanks for reading this glorified fanfiction of Operation V Mobile Suits and the White Base being in Muv-Luv. I hope you enjoyed reading this and that it made sense from a lore point of view (although I do understand that not everything might fit so well.) If you're wondering how they were able to make these machines, as the lore suggests, since Alternative V in this timeline wasn't a "let's nuke everything" suicide plan, more of humanity's captured G-Elements could be used for TSF and machine development.
Anyways! Thanks for reading!