@VoltariIt's pretty awesome so far. I have my "Fury Ranger" up to level 50, and my mage character should be up there soon. I've completed the storyline, and the endgame content seems decent so far. I've been playing each night for the last two weeks, and the game is definitely still fun for me.
I think it has a lot of long-term potential, but I wonder how fast the players will burn through the initial content. Hopefully they can finish fixing the bugs from the release version of the game, and start working on "what's next".