Dude, your blowing the "tail" thing out of proportion. Zidane's tail was was to show he wasn't altogether human (or at least different from the rest), u know, G-nome? OH MY GOD! EVERYBODY HAS LEGS!! You can't be surprised if two people share some "semi-odd" characteristics. Besides you'd probably no the "theif" or the "healer" of the bunch just by looking at them. The try to make them fit the stereotypical, look of whatever class they are.