I started reading some of the articles on this more closely and looking more at the previews, this is definitely fire the old fans edition of Ravenloft. Maybe they know something I don't but it looks like WOTC is setting itself up for a repeat of the big 4E split, in the way that it is shaking off the whole 'bring the fans back together' approach. One strange design choice is they seem to not be including any stats for domain lords (it is possible this information is incorrect or not complete, as I have only seen it in one place). But the reasoning seems to be to encourage people to not have it be about fighting them. Which is fine if you want that, and often I like it when campaigns don't involve fighting domain lords, but lots of campaigns were built around Domain lord hunting, and eventually someone gets fed up and swings a sword at one. They already had baked in protection from the demi plane anyways (most were hard to kill, most required special circumstances to be permanently killed, etc). Between that, the safety tools, the hesitancy to engage horror, and the massive changes, this is just looking worse and worse