I'm having a lot of fun so far myself. The story is definitely slow and bland, but so far that's mattered little to me. I never expected this to be a narrative heavy game. Sure PR hyped it up, but I stopped listening to PR years n years ago.
Yes, it's a tad repetitive so far, but what MMOish game isn't? The gameplay is really what shines here and man is it tight and satisfying.
Having a group of friends play this together is quite frankly nothing short of a good time. If you don't have friends however, you may not enjoy this game. I'd definitely put it in a category with a game like left 4 dead where you need friends to fully enjoy the game.