So my friend and I were having a discussion the other day.
He kept trying to convince me that Blizzard should design a class that doesn't use tab targeting for combat. His logic is that they wouldn't really have to do much, just make it so the class has no auto attack, and all it's special strikes and attacks functioned as cone style AoE attacks, and any range attacks would be dota style skill shots.
I just don't think that would make very compelling gameplay with WoW's mechanics, even if they had a very intricate combo system for chaining attacks together. It would just be really janky, and clash with the rest of the game.
Also goat woman look nice.