A working version of Fallout: New Vegas is about as close to my dream game as I can imagine; a sci-fi, open-world action-RPG with tons of roleplaying options (both in terms of gameplay and your character's personality), compelling themes, great writing, and interesting characters. The only things New Vegas could really have done better (besides actually working, of course) would be to remove the karma system entirely and make the Legion a bit less unambiguously evil, make exploration a bit more rewarding somehow, and by giving the game a better tutorial, probably something more akin to Fallout 3's growing up in the Vault sequence. If this revised super version of Fallout: New Vegas ever happened, I would probably never be able to play anything else, or, really, do anything but play it.