I didnt run across it, so im not sure if it exists, but a creature editor?
Like very basically it could let you pick a color palette and size for any creature in the game right now, edit its stats, the things it can do, flag it so it becomes a hero unit?
I havent played alot but this game reminds me of Ogre battle, would be awesome to be able to have heroes like frost wolves, Animalist Ogres (creature summoners), metallic spiders, Ice trolls, etc...
If the devs would want to go down that road further, then a spore-like editor to help people piece together creatures without having to really model would make me jizz in my pants.