Thank you, it works! I'll try to make it for my heroes; I found a pack that's very close to the avatars of the heroes.
I have a separate model for each hero in h5u format. Which files should I replace so that nothing breaks?
I don't know; if you install my mod, my gnome girls will definitely dominate and overshadow other mods because I changed the mapobjects, but the guys are changing the character file, so they shouldn't mess anything up.
I can't say how to port other mods to mine; it's complicated if it's not just a simple recolor.