I'm alright with IP's, I just think it should be relevant to the park its in. Wall-E, Ratatouille and Mary Poppins make perfect sense in Epcot. One is about the future and the other 2 showcase their countries. But I don't think Guardians and Frozen does either. Neither fits into the overall theme of Epcot as well. Both feel like they should have gone in another park, like Hollywood (Gotg) or Magic Kingdom (Frozen).
Guardians is about a boy who was abducted in the 80's by aliens. Their is nothing mentioned about the future in either of its movies. And Frozen is a story about two princesses who live in a fictional town. Arendelle is not a place you can visit in real life, unlike every other pavilion.