There are often situations in arena where you need to be in two places at the same time. As for 3v3 goes, I doubt you could get high, you can beat some teams with the right tactics, but you aren't hard to counter.

5v5 though, with a healer and a cc class, like a mage or a rogue, moonkin might work too that focuses on cc and nukes at the right times, you have viability as long as communication is proper.