Just a bunch interrelated suggestions.
1. Remove all rewards in winning BGs. I'm just against the dynamics of the current BGs aside from NB and AK. Putting up good rewards and loot expecting people to fight over it is lame. I simply show my opponents in lower BG that, in such system, working together way more rewarding than trying to kill one another, thus, peace. And peace is the least thing we need for pvp. My point here is that if you position pvp between the players and the reward, then heretics (like myself) would simply bypass the pvp part and/or avoid battles that cannot be won.
2. Increase RP gain in every successful pvp kill while decrease if not remove RP loss in pvp death. Increase if not abolish daily RP cap. Remove RP earned from doing mobs so it can only be earned through pvp. This would make RP pvp exclusive. RP becomes the best "reward" for doing BG. In the current system, if you happen to be in the winning side, no matter how poorly you perform in the BG, you still receive the same juicy SG and medals. Consequently, if you happen to be in the loosing side, no matter how many kills you get, you still get relatively nothing. Kindda unfair! On the other hand, RP is earned based on individual effort so it having it as the reward system for BG is definitely just and fair.
3. Make SG(NT) obtainable/purchasable exclusively with RP. Maybe do the same for anc spanners(NT) and other essential stuff. This should make RP the most valuable game resource. This would change people's behavior cuz winning is no longer the ultimate goal in doing BG.