Vyvyan Basterd
Adventurer
Give me a nice modular set of planes where it's easy to take the stuff I like and leave the stuff I don't. I don't want to have to be constantly reminding players about the nonexistence of the Blood War.
But isn't divorcing the planes from the rules accomplishing that? If there no direct ties to rules, then adding or subtracting planes or reinvisioning Ravenloft/Shadowfell as the 2E Plane of Shadow or disconnecting planes they've connected would be modular.
The arguments against the cosomolgy and the monster write-ups seems to be coming from people who like crafting their own vision, but seem upset that WotC doesn't follow their's so they have to craft something. Like some kind of gamer ouroboros.