Both deserters (or something similar) as “Late game bandit enemies” as well as real human factions are on our planning schedule.
I admit that most enemies at the moment can’t keep up with the player progression (maybe except orcs). So we are already discussing lots of late game content right now.
The problem with orcs right now is that they come in “tiers” that are too far apart. Young orcs might need another trick up their sleeve while orc warriors might need to be scaled down a little bit.