WvW and sPvP are pretty fun, but replayablity in my opinion is limited. I would like to see some 2v2 and 3v3 arena where I can get a team together, learn, and practice with friends. Creating a competitive ladder for 2v2 and 3v3 would keep me and I would imagine many other players much more interested to log and and queue more often. I think it would be a big step for the game. Everyone knows the gameplay is one of the best in the genre, but it needs more content and replayability!