For a long time, it didn't bother me because the eye glowing races had expression through their mouth, at least.
But then came the zandalari. Their mouth are deformed in a constant grimace by their tusks (the males especially), and their eyes look fucking empty. I really can't put a personality or an expression on those faces. It weirds me out every time I look at them, but since they are so cool, I play one anyway.