TwoSix
Everyone's literal second-favorite poster
I mean, a multiversal focus does implicitly support DM's making their own worlds, as long as they have some tangential connection to the broader multiverse.We know that most GMs create their own worlds and their own adventures. The game should support THAT.
Toril can always be "Prime-616", as it were, but each table can have their own "Prime-XXXXX".