Atomic Postman
Vault Archives Overseer
Yeah my ideal Fallout show would basically be an anthology
Abstraction of space is one thing, but everything being pre war is another different matter and one that is more Bethesda's approach. In New Vegas there is much more Post war structures being built in general, and it would make more sense for House to actually having put money and effort int ohis venture instead of just everything being conveniently immaculated even 200 years after a nuclear war.
The only thing that is completely pre war in the strip is Mr House's casino because it was sealed shut entirely and protected by big metal doors.
I think House did specifically cannibalize most of Vault 21 to rebuild the Strip, and they certainly look like new buildings.
Wandering around the outskirts lately, it does strike me that much of the damage throughout the Mojave is meant to be the result of the current war, rather than the ruins of 200 years earlier.
Whilst I don't think the Vegas strip has many new constructions outside of the barricade walls and Angelo's signs, it is true that the damage of the Mojave is explicitly non-nuclear. If you recall, House spared Vegas and the Mojave from the vast majority of bombing. The destruction in the Mojave very much seems to be a product of time and two centuries of tribal warfare.