A different kind of pvp suggestion
Of course this would thin out the pvp playing field, so a pvp (not total server) merge would be necessary. I really have no idea how that hasn't been implemented yet anyway, we've been asking for it since basically day one. They did it with hd so we know it's possible.
These two together would revive pvp-dead servers and cause a huge burst in pvp, while at the same time not causing too much pvp traffic since it'll be split between 4 different types of 1v1, dual duel, and 2v2.