The "cool" grey morals. Seriously guys, a place where the power of goodness is the light, is a place where only good people should be able harness It. Making morally grey paladins and even a beign like x'era just For the sake of making characters like Illidan more appealing is cheap and crappy. The thing is they use real Life morals in a world where good and Evil were Well defined, now everybody is waiting For the shitty Yrel's army of light nazis, something that is against their own lore, because as you can see in Arthas story he Lost his Light powers after the culling ( in Arthas book)