PREACH! Split screen is always a great option! My friends and I were sorely disappointed when we all got together to play Halo 3 split-screen/system link, and found out the co-op mode only supports two players on each system. We spent the rest of the evening playing deathmatch, which was fine I guess, but we were really looking forward to sharing the campaign experience and didn't want to leave anyone behind. Also Borderlands would be most excellent if it included split-screen/system-link simultaneously. And arcade start-in, every game should have that. If I want to add a player to a game, all they should have to do is pick up a controller and press start.