Other option could be a new module but set in Kalidnay, the dark domain in the demiplane of the dread, the classic "weekend in the hell". At least I feel curiosity about how the metaplot would continue.
Or Hasbro could talk with a videogame studio, for example Epic Game, and we would see Dark Sun skins in Fortnite.
* Psionic doesn't need verbal or somatic components. This is very important when you want to do some actions hidden among the crowd.
* Psionic powers isn't only for epic fantasy, but also for sci-fi, urban fantasy and even a first step for some possible future d20 superheroes.
* Would you allow totem shaman, the incarnum soulmelder class in Dark Sun? I admit incarnum in DS would be a great retcon
* Could a 3PP publish a psionic D&D version of the Solarian, Biohacker, Vanguard and Witchwarper, classes from Starfinder? What do you think about the new psionic classes for Pathfinder? for example
the aegis.
* Don't you miss the maenads and xephs PC races or do you think their background was too boring?
* I have said in the past the old lines will come back with some project linked to the media, for example Ravenloft as a special chapter in the MMOs.
* Maybe WotC could publish a new world as a spiritual succesor or Dark Sun...for Magic the Gathering, and latter to allow a little crossover between this and Athas.
* I would like the Athasian giths as third subrace, but with opposible dumbs.
* My doubt now is if spikewyrns are true dragons because I like this crazy idea.
* If there is DS you can bet somebody will aks biopunk lifeshaper organic-tech, something like the biohackers of Starfinder or the living machines by Yuuzan Vong from Star Wars Legends.