Got to thinking of some things I miss from fallout nv, and hope once the modding kit is released its possible to create
Casinos. - I liked the option of running to vegas to get my character started. Win lots of cash in blackjack, and get some decent armor.
Sierra madre vending machines - I just loved those to death. Needed some odd ammo type? Needed booze or medicine? Put in your caps and you are set. I'd love to see those make a return. With the new survival mode limiting fast travel, having a few vending machines scattered about would be really nice.