Getting back on topic...
This sounds like a great mod, Atrocities. I was thinking of creating a mod loosely based on Civ/Alpha Centauri, with cultures based on political and economic structures found in human history (and a few MoO style alien ones as well). Here's what I came up with:
link
Please feel free to borrow/steal from these.
If you would like another collaborator on your mod, please let me know. Perhaps some of my ideas would fit into this mod?