With the change in demographics and the sudden growth of Laestrygonia comes instability. The human population rises up, and the nation is thrown into a terminal civil war. I’m thinking it will last 2 turns, during which there will be no conventional actions. 2 human splinter states will emerge afterwards: one in Belgium that’s an NPC, and one called Etxe with a capital called Berpizte, on an island in the Rhône delta (French Mediterranean).
I will continue playing as the human nation of Etxe, which will inherit the same technology but have a smaller population than Laestrygonia. Additionally, it will have some technologies reflective of its new humanity; namely a government, a religion and wooden houses.
The remaining neanderthals will be confined to scattered remote villages once the war is complete. This is all subject to game master approval, of course.