Henadic Theologian
Legend
What about Witchlight as setting? Ravenloft started being only one module.
I wonder if there is some risk announcing a new-brand line when the fanbase wanted a new updated setting. I suggest to do both, in the same day annoucing a revival and a new line, but then maybe the old glory would be the center of atention.
Maybe "Gamma World" would be one of the future "planes" for M:tG, but in this case it would be a fictional world, not our future post-apocalypse, and some zones could had got some touch of gothic+folk horror.
Do you mean a Domains of Delight setting named after the Witchlight Carnival, which acts as a way into the Domions of Delight?
I think that's an extremely solid chance it's one of the two settings aong with the First World.