We will see the return of the land of the mists, but the next steps will be more modules, not the setting.
I have published pictures to suggest new stories for your games, for example one about an alien ship crashed, and it is explored by the PCs they find taint elementals (from Heroes of Horror) acting as typhoon creatures from the videogame "Prey", or the alien from the movie "Life".
The demiplane of the dread is a strange place, because it is like a prison to punish criminals, but where these can hurt more innocent people. Shouldn't being worse their punishment? where is the penance? And it needs a little retcon about demography because if they don't survive enough people for the generational replacement then the towns will be empty.
And we have to think about how to add "more space" for lots of new creatures from latest editions, from Heroes of Horror or Libris Mortis. What if a player wants to be a necropolitan (sentient undead from Libris Mortis), a Raven Queen's cleric revenant, or a hellbreed, a PC race from Fiendish Codex II?
AD&D and 3.5 had got lot of good ideas, but now it is harder to add new things to old settings from 2nd Ed. And some DM will want to use for their games lots of ideas from movies or videogames.
"Remake" version of an Inhumanoid creature, trademark by Hasbro.
("Afflicted" from Resident Evil Revelations 2)
(Exurgent virus from "Eclipse Phase" RPG)
* The Arak need more work, but Ravenloft can't be only undeads. These have to be a true menace or potential antagonist for all the rest of sentient monsters, like a mixture of evil girl from soap opera and enemies of "monster-hunter/magical girls" as Halliwell sisters (Charmed) or Buffy the vampire slayer.
* What do you think about a crossover between Ghostwalk and Ravenloft, about dark powers trying to taint or invade a crystal sphere in the material plane? It would be like Lovecraftian stories about heroes avoiding world being invaded by a outsider and tainter force. I have imagine a crossover with Innistrad but it would be more like abduction more people from those regions and creating new domains.
Other idea is the brain-god from Bluespur creating spies as doppelgangers to infiltrate among other regions, and their land being invaded by alien living constructs, or half-golems, and a open war against Kalidnay. Or a new race of werebeasts appears in Falkovnia, the werefalcons, acting like a fantasy version of the German SS.
Will lord Soth return to Ravenloft, or will he be sent to a new demiplane bridge between both worlds (to can be the "guest artist" in both lines)? He is sent to the past to kill the kingpriest and avoid the cataclysm, to get redemption and being allowed to find his family, but in the last second his son appears to avoid the magnicide and there is a fight. Lord Soth attacks his own son thinking it is a trick, an illusion (and maybe it's right). Kingpriest is killed and the son is resurrected after (he wasn't really, but his own story was too close). There is a new timeline, but it's not a happy end because the god Raistlin from that future appears and there is a conflict.
