I would have to disagree, I think height advantage should work with ranged and spells. It is taking advantage of 3D space, rather than 2D tabletop. But, I don't think say you on a small ledge just behind someone, and it gives you a melee advantage. That just doesn't sound right. There should be a slight benefit for ranged classes considering how OP melee classes seem to be. I have played a warrior, rogue, hunter and now playing a warlock, and melee definately have an easier life and do more damage it seems.
