And that's how it should be across the board. But Disney now starts with the IP and then works backwards from there. Previously they would start with the theme.
There are absolutely IPs that work in EPCOT. I really don't object to Ratatouille in France or Coco in Mexico for example. I also think there are story treatments that could justify Guardians and/or Wakanda in Future World. What I object to are the lazy "familiarity" driven IP integrations like Frozen, Finding Nemo and likely whatever we're going to see in Harmonious.