they could add more static ones or maybe neutral barbarian outposts? Whom you could either lose or gain a good status with based on how you respond to them. Perks being a pad to crash at and some npc helpers who can aid you on travels. I guess it would just be like a couple different pre built wood forts with randomly named npcs, perhaps 4-12 of them, generating anywhere in the meadows, forest or mountains (maybe with neolithic, bronze and iron/black tiers, of which can be upgraded by giving supplies). But this sounds like it would happen more as a cool mod than anything.