It would be neat to see roving bands of human npc factions but that would probably be difficult to implement correctly.

I had the thought several times upon reading one of the first survivor notes when entering the exiled lands that Sandstorm Beasts should have been a part of the sandstorm, but they were unable to implement it correctly.

Something like a slow moving radius in which the local faction has a grouping of NPCs centered with a tether to one group leader boss or terhered to the center of the ‘storm effect’ would be cool, though. Still wouldn’t quite solve the issue the old purge had, which was inaccessibility to certain locations. Which in several cases would have purge waves teleport into your base.

So some locations would by default always be occupied quickly such as the plateau behind Warmaker’s.