Rival Wings was fine actually, and the only real issue they didn't address was healer potency. It's not a bad mode at all, especially once they balanced it the first time. What they needed to do was address healing at that time, because it was pretty blatant how strong and unbalanced it could be in a mode that was more defensive than other pvp modes. That they refused to do that kind of killed the mode. Stupid Feast balancing dragged it down.