I try to think of it like a barbie doll, most people would like to see the head, so they are certainly larger than they should. I don't remember but I believe all the heads are 2x bigger than average.

Once I get the Unity HUD running, I think I'll get a character to move around and see if it looks bad or not. I really can't know how it will actually look until I test it. Might have to resize them.