BC is important to me since I'm currently using up all the outputs on my TV for all the systems I own, and I absolutely hate having cables all over the place, plugging and unplugging them, and trying to figure out which console a certain cable goes to.
The other problem is room space. I don't have enough room to put a little black barbecue in, unless I took out the PS2 in exchange. Also, I hate having to use the HD disk every time I start up my PS2 so I can play the games scaled up, so it'd be nice to have a PS3 automatically do that every time I wanted to play a PS2 game.