I would be support of some sort of co-op play. I'm sure Crytek could come up with something interesting for us to play
I did look through the future game modes, and it appeared one was called Assualt (I think). The way the description read, it sounded like it would be a co-op type game. I'm not ranked up enough to play it, and it was late, so I may have misread. So if anyone is around their console, verify please. I believe it was the last or second to the last game mode you can open.
You can use private match to test out assault, there's no AI in multiplayer.