Skull of Shadows (SoS) is a Polish mod that replaces all the factions.

Will you take it on?!

Unfortunately, no, because I don't know how to make mods (I tried, but I'm too dumb and don't know the basics of C).
Unless it's just about looking at the game, identifying which models are good, and passing their names on to someone who knows how to work with the code part of mods.

Added 12 minutes later
However, if someone is willing to teach me, I will try.