Deathclaws, Raiders, Smugglers, maybe a BOS/Enclave outpost, some sort of Mercenary group, Regulators, some NCR guys, and a few Super Mutants. Alot of the weapons from FO3 as well.
Libery Prime... yeah... no comment. And there's another thread already for this. And I want some great dialogue, I want to feel like I'm going trough PT 2 or Bloodlines 2.
Super mutants with gigantic doofy upper lips that have to be tied up with weird belt headgear
it'd be cool to see some broken pipboy 2000s laying around (especially to see how it would be rendered in 3d)
since ncr is involved, references to the vault dweller and/or the chosen one
non-grouchy ghouls and more variation on ghoul voices... or voices in general. ghouls that stop calling you "human" like they aren't humans because they have a bunch of scabs. feral ghouls should probably go away unless they can really do something to make you realize that they used to be humans and feel a little bit bad for killing them.