This link will actually take you to an online petition to request support for coop gaming in Battlefield 2. I put my name there, just to see what comes out of it.
I've got to say that i do think that it is a waste of time for Battlefield 2 itself: Everything i read about it says that the bots cannot really be programmed in an efficient way. Even the coop mod (now on version 3) for BF2, created by people that got great things achieved on BF1942, are just keeping the bots' paths and making the maps around them. Lame for Dice to release things like that.
However, it might not be too late to demand that Battlefield 3 comes with a good AI (artificial intelligence), and easy programming for map makers and modders. So let's sign this and ket EA and Dice know about our wants and needs, friends!
While i'm at it, check out the maps coming out for SWAT 4. Most come complete with coop version, and the bots are solid and fun to antagonize.