[@Kingfisher]
Yeah some of the shit that Blizzard has done has been deplorable. 
Like what they did with Illidan in Burning Crusade...
I never saw Illidan as a villain, but suddenly he's gone mad and you gotta stop him! Same thing goes for Kael, but it was a little more reasonable for the blood elf to go insane.

I'm not exactly sure what they have planned for him in Legion, but I hope its better than BC. Illidan is one of the best characters in the franchise and one of the best anti-heroes. He definitely deserves better. xD
(Yes, Illidan is one of my most favorite characters ever >.>)