I am not interested in joining your group.
This is the one major question I need answered. My brother and I have a single Xbox 360 (it's mine). SO we try to get splitscreen games often (such as Gears, Army of Two, Left 4 Dead, etc). I understand there will be 4-player Firefight and co-op (?), but will two people be able to play on the same console, split-screen?