I real like your model and i am fan of Warcraft lore i also created illidan in the past
i have only the lichking file thou,
Things that u might interest to change, i dont know if u did it on purpose or its just your style but the following suggestions will make your model more cinematic realistic,
First: the head Is way to huge try to make the head smaller but not his hornes, His torso part must be 2.4 times larger than his head otherwise he will look the feeling that he is a midget.
Second: The chest part is the most importand to the mighty characters, it show how brutal and mighty the character is, Illidan is a badass so scale up his torso.
third: the wings make them twice biger than they are , and scale them to look more pointy and less as a spherycal like,
here is an example