Hi, good day/night, please let us have the opportunity to transmog fist weapons with other one-hands (axe, sword, mace) if you can consider this I would be eternally grateful and i believe a lot of people would be too, hope you can think about it, thank you and have a great day.
Tmog is tied up to weapon animations, as custom feature in WotLK. You'll have to go into game code and change lots of things for such "feature". I'd say it is not worth the risk (in sense of troubles it might cause, not speaking about money)