For many years I was a diehard sub. When they nerfed the sub-survivability and gave Shadowstep or Prep to assass, I felt there was no reason to stay Sub, so I am currently rolling assass. I was having a lot of fun with assass levelling up, and while I think it is a great spec, I am beginning to wonder its efficacy at endgame, as it seems that most rogues which I come across in bgs or arenas are combat or subtlety.
What I see as the pros for the other two spec is having a Hard-melee burst, whether it be with shadowdance (I guess you now rely on evis for wicked burst) and Killing Spree. Assass still has a pretty sweet burst, but it is clearly more dependent upon the DoTs.
What is your spec and what are your thoughts on the matter? On a side note, I guess we're all pidgeonholed into Anticipation, as Shuriken Toss is a total joke, right? XD