Disney clearly doesn't feel Pocahontas is as bad as people here do. Pocahontas still gets regular re-releases, promotion, and merchandise, unlike Hercules, The Hunchback of Notre Dame, The Black Cauldron, Treasure Planet, Atlantis, etc. I don't think it will be a world in KH3, but it has the potential to be really fun, I'll admit. And I'd much rather have Pocahontas as one of the new PoH over Merida or Mulan.
I'm not saying the controversies surrounding Pocahontas aren't justified, but many Disney films have had controversies and criticism to varying degrees. YMMV
Maybe Pocahontas could be for the next Saga of Kingdom Hearts alongside the Other Disney Films that haven't appeared in the Series.