I was around 10 years old when the Ellen update came to UoE; it really was a product of its time, and having gone on since then, yeah, almost everybody can agree that it's one of the attractions more sorely in need of an update. That said, even the original UoE had some of its issues, but it at least made an earnest attempt to inspire and, oddly, the '82 script actually did more to talk up alternative energy sources than the mid-90s version did...really, the Ellen version comes off way too much like "Fossil Fuels Are Keen!"
I guess that's really the "fix" a lot of us are looking for in updates to EPCOT: the chance to feel inspired again, to look at real world issues and think "hey, there are solutions to these issues! This is just a theme park attraction so it won't have all the answer, but the possibilities exist, I've seen some of them here." I get the argument that "people don't want to think about green energy and global warming while they're on vacation", but man, again, WDW is huge, allocating some space for things like that won't drive the crowds to Universal. Update the theater ride to have Neil deGrasse Tyson and Bill Nye teaming up to discuss new energy sources, or switch to an Omnimover system that can keep the dinosaur diorama intact, there are plenty of options to do something incredible now that we live in an era where solar and wind power are becoming so much more viable than they were in '82 or in the mid 90s.
I'm with people who say that it'd be great to see a thematically appropriate roller coaster in EPCOT, specifically the original Mt. Fuji concept, but on the whole EPCOT doesn't need a roller coaster, either. It's a park that thrives best when it has a consistent theme to it, and great theming can make people forget things like coasters really quickly, especially in a park like EPCOT that if utilized to its full potential can have inspirational attractions alongside fun diversions like street performances, art and tech installations, and good food and drinks.
I guess it's all just very frustrating to think about. I'm genuinely happy and excited to hear that the entrance and fountain plazas in Future World are set to be made approachable and walkable again, I really am, and I can't wait to see them seem human again. But it's a case of one step forward, two steps back: reinvigorating the plazas is truly fantastic and praiseworthy, but missing the forest for the trees and adding a poorly themed coaster that alters EPCOT's skyline? Bad misstep if you want a park that's healthy in a more wholistic, overall sense.
Sidenote: I saw Kubo and the Two Strings yesterday, and man, if Disney needed an IP to shoehorn into World Showcase, I wish they'd make a movie more like that. Just a full-on celebration of a culture, where a ride about it would do a great job of highlighting the culture and not just the IP. Hopefully Moana and Coco hit similar notes, because an IP like Kubo, if Disney had made it, in Japan would not feel so intrusive.