With Zul'jin probably being officially revealed in the next couple of weeks, I've started wondering what the heck his kit is going to be like.
Back in Warcraft 2, he was represented as a standard Troll unit and didn't have any special abilities. And his raid encounter in WoW is all over the place. Looks like he starts off with a standard ranged attack, but in each subsequent phase of the fight, he shifts into a different animal - Bear, Eagle, Lynx, and Dragonhawk (I think he's channeling the powers of the Amani Troll gods).
I had assumed he'd be a ranged AA assassin, but now the only thing I am pretty sure of is that he'll be ranged.