In general, I'm opposed to removing things like skills and/or attributes, as they did in Skyrim. However, Skyrim actually played incredbily smoothly compared to Oblivion and Morrowind, in my opinion, specifically regarding leveling, of course. I still hope they don't completely remove skills and would prefer to see attributes return to TES (just handled differently from earlier releases), but since I have enjoyed each iteration of TES and Fallout that Bethesda has made thus far, I'm not ready to freak out yet. I fell in love with Morrowind and thoroughly bought into all the hype surrounding Oblivion's release, which cured me of game-fever, and certainly prevents me from ever pre-purchasing or buying on release day. I have high hopes for Fallout 4 and more than my share of anxiety that some features, or lack thereof, could disappoint. I'm a big boy, though, and I can take it in stride if there are massive game design changes from Fallout 3 so long as it is integrated as well as before.