Oh I agree. I probably play 10 co-op games for every 1v1. I get a bit too worked up over 1v1's, makes me all nervous and twitchy. PvP team games are fun too, I'd be down if you wanted to team up some time. I know UMD and cmd used to play as well.
I still have it, I'll be down to play later tonight (after 11 p.m.) or tomorrow at some point. I stopped playing because I always got owned in 1 v 1 and just lost interest mostly. It's a really good game, though. I don't know how the Koreans do it with their playstyle. Just insane.