This won’t go well.
This does raise a question: is Dark Sun coming back? One of the big reasons that WotC gave for not releasing the Mystic or the Psion was that there was no book for it to accompany.
Source: Bell of Lost Souls
Dark Sun is a post ecological collapse setting where social stigma, tyrannical rule and slavery are core themes of the setting. D&D 5.5E is about not offending people. The current writers can’t deliver the grit Dark Sun fans would like.