Honestly sharing your game is the biggest draw for me right now. With my PS2, my friends and I would switch memory cards to get each other through tough parts of games. With the PS3, I'd have to have someone come to my house in order to play through certain parts for me. If I can just call up a friend and say, "hey, this mission is killing me, give it a try" that'd be really cool. (Because, in every GTA game I am absolutely horrific at flying missions, they are always my undoing. Driving, boating, motorcycles, I'm fine... flying, though, forever fail.) I tend to quit games because, I'll have good momentum throughout then reach that one mission I cannot pass, so having a way to easily pass the game over to a friend to get me past that obstacle that means my games would not end up in the metaphorical junk pile.