I searched the forums and couldn't find a similar thread.. So let us have one.
For me, a completely new PvP type of style (WvWvW). I really dislike the whole one side vs another side kind of ordeal and a three sided PvP archetype seems to me to be the most effective way to handle world balance. (similar to a system of checks and balances where one side gets too strong and the other two attempt to balance it out.)
PvP is huge for me and all that added PvE stuff just makes me want this game so much more.