Quick suggestion for NPC behavior. I think it would be interesting to have diffent reactions to raids. i.e. guards should be the only NPCs to aggo on raids since they can defend themselves. Workers should stay where they are and keep working as far as they are not attacked (I started to deal with adventurous workers by locking them into their designated workspace which fits the underlyring slavery-theme but there might be a more sophisticated way to handle that).
Another interesting aspect could be Guard-Towers to focus their actions to certain areas. The game could become more tower-defence like (and I don´t know if you´re planning to go that way), in which case I was wondering what the goals of raiding enemys are, maybe some would want to attack structures, some would want to kill your folks, others go directly against yourself. Some might even want to destroy your computer, which could loose you some resources, something like that.
Well, just trowing out ideas. Don´t get me wrong, I really like the atmosphere of the current game, having a town, hopping around with you llama, doing the missions, watching traders come and go. But I also like organising the base layout to create an invincible fortress, a capital city with different districts for trade, industrie, countryside and housing, and equally strong and organised enemies to challenge my claim to the wastelands. So there would have to be a challenge and reward system that fits that kind of playstyle, if one wants to go that way. Because I think the game fits a casual and a hardcore playstyle and there could be an offer in both directions.
Yes I plan on making mobs that steal crates and throw bombs while raiding bases. If you have a base full of NPCS that aren't guards they get slaughtered when the real raiders come. Kind of the way I am going with the turrets and saw traps. Enemies will destroy doors and gates if they are locked out (I believe that mechanic is still in the game). Maybe raiders will release roaches with TNT strapped on them to blow up walls and things.