Med'an-He's too much what you'd expect a child writer to make their OC like.
Garrosh-He's not intelligent and doesn't seem to have any regard for character development as they made him out to be a cry baby, then a douche, then an honourible character (Stonetalon), but then he forsakes everything in MoP and just wasted.
Thrall-Too much focus on him, he's like the Pikachu of WoW.