I am somewhere in-between on this topic.
I agree with the comments about HS. I miss the park identity. I miss the the sorcerers hat, even if it was blocking the view of the grand theatre. But mostly I miss the Studio Backlot Tour and the Great Movie Ride. I felt that those 2 rides kinda identified the park to me as a celebration of Hollywood. Now it's just kinda....a bunch of rides.
Epcot had really 2 purposes. The front area (Future World) was educational about the world around us, and the World Showcase was education about the cultures of the world. I do not have a problem with IP per se. But I do hate to lose the identity. I am not a fan of three caballeros, BUT I feel it still fits.... It's inside Mexico, and you still have all the culture there. The ride still showcases the Mexico streets.
As much as I morn the loss of the DreamMaker, again I still feel that at least Imagination BELONGS. It teaches imagination, but Figment is your instructor.
I did not feel like the Nemo update to the living seas fits. The ride doesn't teach anything. It's just showing.... nemo. Once you get to the seas area, at least it retains that part.
Test Track I really dislike. The old test track that showed that they were engaging antilock brakes, and what happened when they did, I felt was really cool and it was neat to see that technology in action (I never disabled them in my car and tried to skid on ice....). It would have ben really cool to do something based on self driving, or hybrids, or whatever else is coming down the pike in automotive safety.
I would not have minded some educational material in GotG but with the IP involved. To me that honors what EPCOT is meant to be. I am not however a fan of a straight up IP ride. I.E. I want the parks to retain their identity, but I do not mind IP mixed in as long as the park still retains a theme and is not just a collection of rides. Just like in MK, I would not like to see Space Mountain in Frontier Land, or PoTC in Tomorrowland, I think each park needs to maintain it's identity. If GotG would work by picking it up and plopping it into the middle of HS, then it's the wrong ride for EPCOT. You should be able to look at the ride by itself and say "This ride belongs in Animal Kingdom", or it's poorly themed.
Does that make sense?