Actually having some success with descr-strat, export_descr_unit, and other file modding. Making extensive changes to the units at the various settlements, ambushes, and mercenaries available. Also adding/moving villages and forts. Generally working on units only appearing in certain areas that make sense based on lore and terrain, etc. Anyhow, I have no idea if this mod is progressing, but I'm still messing with it!