The place this hit me most is the resort near camp Golf that serves as the NCR Ranger barracks. The rooms upstairs are DISASTERS. There is
no way that the rangers would let something like that stay.
Their big mistake was setting it so far after the war... 200+ years is too long to believe that garbage is STILL lying in people's bathtubs and cars are still littering the streets, yet ammo boxes and first aid kits are still filled. Anyone seen the show "Life after People"? There'd be nothing left of those cars after 200 years...
I could understand 25, even 50 years, but these games are all in different locations, why set them so far apart time wise? By the time FO 4 comes around, more time will have passed than between now and the birth of Jesus, and no one would have bothered to even invent the loom!
It's 200 years after the war, not 200 years after most people left the vaults to re-inhabit the surface.