DISNEY characters with non-DISNEY characters - this was something I always loved about KH and that started to become irrelevant as the games went on. I want Donald, Goofy etc. to have more to do with non-DISNEY people than just yelling "we'll stop you!" or "oh no!"
This. One thing that always intrigued me is how little interaction there is between Disney and Non-Disney characters. Even taking out the fact that the original characters are ultimately owned by Disney in the end, there is surprisingly little meaningful interaction between them and the Disney characters.
And then there is the whole lack of interaction between Square Enix characters with...well, anyone at this point. As of this moment, the most meaningful Square Enix cameos that we've had in a very long time have been some of the characters from The World Ends With You. I understand that they are only meant as cameos, but we've almost completely been devoid of even THAT. I want to see some more interactions between Disney and Sqaure Enix characters seeing as this series started as, you know, a Disney and Squaresoft corssover back in the day. I want to see more interactions between Merlin and Cid, or Cloud and Scrooge or the likes of Laguna or Gilgamesh with pretty much anyone.