Well, I do agree with the idea of giving the side with fewer numbers a small PvP buff or something similar. Doesn't mean you have to give them unfair advantages, but a little boost to the morale goes a long way. If I'm not mistaken, that's what they did in Aion, and it worked quite well there. And you can say whatever you want about Aion, most players would admit that this is/was one of the few games with proper PvP.