think there is something to be said about fallout focusing more on how and why prewar society led to the destruction of the world than trying to make new societies and stuff.
I mean, New Vegas does this in that its factions all represent prewar societies or ideologies. It's one of the ways NV is truest to the original Fallout imo.
I like the idea of a Followers ending too, but having an objective correct and good ending might be a bit on the nose for NV?