Hell, as mentioned a few times before, this is just the company adding some of the most popular mods into the game. I enjoyed Fallout 3, for example, but I fucking LOVED Fallout 3 when I stuck Arwen's realism mod onto it. And hey presto, NV comes out with a relatively similar mode built in.
What I really wanna see is better combat. Basically, take Skyrim and add Mount & Blade combat, and prepare for sheer awesomnity~!
EDIT: Come to think of it, M&B handle "romance" pretty realistically too. I think as long as we're not railroaded into marriage. I can just imagine some god awful quest along the lines of "Before I trust you with the sacred sword of dragon slayage, you must prove that you are the chosen one! And the way to do that is to take my pretty but socially retarded niece on a date. Every Friday night. For six months. And if you miss one date you have to start again. And there'll be even less sex than Baldur's Gate 2. Damnit, this girl needs a boyfriend and the saving of the world is no longer a priority!"