Last Month the Japanese try to retrive this mod a little bit more. They played in the at 2pm CET. At the moment the gametracker,com Server Monitorring is off. Hope soon they turn it on. The ranking seems to work.
I have looked into having a moving CP and asked a few of the more experienced modders out there. The general feeling is that it cannot be done. Just spawn points. (Could be an amusing way to keep your buddys with you tho... kicking around the 'spawn ball')