Faolyn
(she/her)
Exactly! Although I seem to remember an ep of Star Trek: Voyager with that plot.Why even keep slavery, actually? I thought on it long and hard, despite my earlier post.
Couldn't we replace it with something more interesting and insidious? We have these Sorcerer-Kings who are also 20th level psions. Why not have them use psionics to mindscrew people into being in their city-state? Afterall, in a Wasteland environment, numbers rule. If you can brainwash pepole into believing they've always been a citizen, or that they've long since pledged their loyalty to the sorcerer-king, then you don't need slaves. You can build a thriving city-state by abducting people and hitting them with the 9th level psychic magic nonsense.
It sounds perfect for Dark Sun, keeps the core of the ideas, but adds a lot more nuance and a less icky angle one could take. Now people aren't in literal chains being whipped and beaten, they've been possessed by a psionic "virus" that makes them leal fanatics who love their god-like rulers.
But yeah, controlled workers, or maybe undead or construct workers (both exist in DS), or even workers who are (gasp!) actually paid to do their jobs! The sorcerer kings may be pretty evil, but that doesn't mean they can't realize that paying their workers makes for a better workforce. There are a ton of options here.