CTF mod has offically happened.  Desert Conflict has modded BF2 for CTF.  It has all the unlocks even SF.  Not ranked but who gives a shit. One of the  IP:66.235.177.213

Download here:
http://battlefield2.filefront.com/file/ … Flag;52157

Other IPs and the Desert Conflicts sit:
http://www.desert-conflict.org/