The issue is that since you guys wanted to really follow the lore, the Beastmen were way too weak to do anything interesting due to how the Horse Lords mechanics work (they rely on buildings), but i's been a while since i played them so maybe i'm mistaken.Imo thats more of a problem with Nomads in CK2 in generel, than just with the Beastmen. But a little more flavour wouldnt hurt either.