The players in my game are getting close to going underground, I will be converting the Goodman Games 5e version of Lost City to Dark Sun. Of course I need to switch out some of the mobs in the dungeon, which won’t be too hard, but I was wondering if you guys had any suggestions? I will be using Thri-Kreen in place of the ants, and there will be a few “lost” races still hanging on deep in the caverns, albeit changed to fit. With a possibility for the players to go really deep into Athas. Seems Fire Giants are a given in that situation, but possibly Duergar and Deep Gnomes as well.
The mind flayer will be in, with a Gith faction seeking to destroy him. The Efreet will be in as well, with a chance for him to grant passage to the City of Brass if the right conditions are met, but for the most part he will be adversarial. I might decide to replace Zargon with something else equally sinister, but more fitting to my campaign.
I like to think outside the box for my campaigns, so please don’t blast me with the canon lawyer crap, I don’t care about canon too much.