I have two suggestions:
1) Create links to the finished units in the project header or in the faction description. So far, I've only found the birds, gnolls, and genies. If there were any other test units, I would like to see them. And it would be better to store them in one place for easier searching.
2) I had an idea to create not a global mod that replaces factions, but a bunch of small mods that replace individual units. This will allow the player to more easily customize the Gameplay and faction to their liking. For example: I don't like the zombies and undead in the undead faction, so I replaced them with Mummies and Black Knights. Let there be alternative units for all levels. This will result in a complete faction replacement, with the ability to keep favorite units. (I hope I described the idea clearly)