1. All Lyons says is that you learned more in the last two weeks then he has in the last 20 years of fighting super mutants.
I said Lyons wasn't into politics, and that he is racist to ghouls, and thus, wouldn't be helping anyone unify. That isn't a contradiction, i never said he would STOP them from joining, I said he wouldn't be helping them do so.
2. I've never heard anything in any Fallout game where anyone treats them like a branch of the NCR military, at most, they are a military contractor, along with the Crimsom Caravans, and the Far-Go traders. I could see the Regulators and the Rangers doing something similar, taking on contracts of a possible D.C. nation, but never as actually part of them. If anything, the Rivet City security forces would form the basis of a military.
3. Increasing trade, helping each other to fight off the remaining slavers and raiders, and generally just helping each other out is not doing nothing, you don't need to become a nation to do stuff and help each other.
4. The reason why D.C. has such a huge slaver presance, yet so few in-game salves, was explained by The Pitt being the ones who buys most of them. Almost the entire slaver operation for 200+ miles in all directions from the Pitt is to feed The Pitt's massive need for slaves. There are a few local salve owners, such as Tenpenny, but the VAST majority of slaves are sent to The Pitt. The entire city of Rockopolis was sent to The Pitt after it got enslaved. Once the cure is distributed, the very core of the slaver operation from The Pitt to D.C. will have next to nothing to sustain itself.
5. Becuase you dont NEED to form a nation to help eachother.
6. The Legion is, as of NV, a single minded entity, the NCR, as of NV, is a single minded entity, the MWBoS already destroyed the bad mutants during Tactics, and is now, a single minded entity. Nations are fundamentally counter productive to a interesting game setting.
While I agree that total anarchy gets boring, nations are not the way to go about solving that, stable, independent, cities are. The greatest part of Fallout 1, 2, and 3, was interacting with a variety of various towns, and the people in them, each with their own culture and identity, often times wildly different from each other. Nations fundamentally ruin this idea by making everyone the same, with homogenous thought and action, something NV suffered from greatly. Even though the Mojave was only at the edge of the NCR lands, no town outside the Strip, Nellis, and Jacobstown, had a clearly identifiable individuality, it was just this big collection of "normal people doing normal things like any normal city in the modern world", it's boring.
The development of nations also introduces massive story problems, becoming so large would naturally result in the removal of most raiders, mutant animals, and other hazards, thus giving the player little to do in-game if the game is inside the nation borders. On top of that, there is very limited story development one can take, either they suffer from a civil war, at which point the entire game is just hearing two slightly different variations of the same ideal thrown at you.... or nothing happens, and even that is limited as either the civil war succeeds, which just results in the next game being those two, now separate nations going to war, and hearing the EXACT same slithgly different ideals over and over, or those two nations ally, while staying seperate, thus effectively negating the civil war plot to begin with.
If the game isn't set inside the nation, but rather on the outskirts like NV was, then you are stuck with JUST a NV style plot, this massive nation fighting whatever villain of the week enemy managed to somehow grow large enough to fight them, which just becomes increasingly less believable as the nation gets larger and more powerful, and NV pushed the limits of believable with CL being able to match the NCR already.
Nations are dead ends plot wise, even more so then the west coast BoS was back even in Fallout 1, they are limited to two or three interesting storyline, which everyone has seen already a million times over and thus offer nothing new to the series.
However, independent cities not only manage to retain the charm towns in Fallout 1-3 had, and NV lacked, but also offer a far greater variety of possible plotlines, and things to do, because they are far less secure from outside threats, making the outside threats actually threatening and believable, and the lack of some massive government to enforce things like racial equality and similar things, allows for far greater ways to take the story. You dont need total anarchy with independent cities, but you also dont run into the total lack of believable threat having large nations create.
While I dont agree with the wording he used, or even really the method he wanted to destory them with, I totally understand why Chris Avellone wanted to nuke the NCR and Legion, they are boring dead ends plotwise.