So, I just got to thinking about something...
We could have a teleporter, right?
This Teleport would port you to the zones that are under control by X faction; Example;
Now while this is a rough draft literally thrown together in a couple seconds, the idea of it stays the same, the red zone indicates that it is PURELY MEANT FOR PVP PURPOSES ONLY! Far as the rest goes, that can be easily changed.
As far as who controls it, that is going to be a interesting script (for the PVP zone), the rest of them will be pretty easy, if I do say so myself... Have the zones repop every like, hour or two hours, have 7 or 8 different zones, or something to the nature... It shouldn't be to hard to set up...