I think PVP zones should be broke up more. You have high levels running around D Water which leaves no place for levels 40s to go and have PVP fun. On maps 1 and 2, it's a little more even matched which makes it fun.
As for mages/pagens and battle priests/orcs, PVP is just plain hard, too squishy. Magic users can hit hard, and so can the other cleasses, but die too fast.