The ABC series Once Upon a Time did something similar and while those characters were certainly inspired by their Disney counterparts, they weren’t the same characters.
The Kingdom Hearts series is absolutely chock full of anime nonsense, and that doesn’t stop the Disney fans from loving it when you summon Genie while in Neverland while standing next to Donald and Goofy.
Other projects, like a Magic Kingdom film from Jon Favreau, have teased the concept before.
The idea of a Disney Cinematic Universe, a place where Disney characters from all over the company’s history come together, is something that a lot of fans have wanted to see over the years.