I guess you would have had to have liked the first one which I suppose was long winded at the start. But thats due to biowares great attitude towards story driven games, alas I guess it isnt for everyone but I still bet Mass Effect 2 will revolutionize the game industry a bit with this save feature thing. So for me has to be that, the replayability and just all around imbaness of the choices I made in the first game, actually affecting the second game in major ways is leet. I even got a few different type of saves now lined up for it, Wrex dead, Wrex not dead etc.
Damn I know the MMO is probably going to be awesome but I still wished they had made a single player KOTOR with this in mind, Be great to go looking for Revan or some shit!