Following the suggestion here:
Bigger settlements and warfareSpecific suggestion for Finn war and hunting parties. With already existing code base is to have Driik, Reemi war parties to counter attack Njerpez (code from Njerpez raiding parties)
Bonus for asking PC to join a war party, or quest to go get X more volunteers from other villages/cultures to join.
Add hunting groups (few cultural encyclopedia pages mention seasonal hunting and fishing groups) instead of just single hunters.
I feel this would add great level of realism and immersion.