Honestly?
Everywhere needs a revamp.
SSE, the Land, Imagination, the Seas.... it's all tired. We just love some of these areas because they have memories and sentimentality attached to them.
But no one has gone of Living with The Land in the past ten+ years and gotten the same excitement they get when they go on something like Mansion.... same goes for Nemo.... same goes double for the Imagination Pavilion.
Where do you even start "fixing" epcot when it all needs to be fixed but you know that the company will somehow give you worse versions of what needs fixing?
I don't know what they should do with epcot... or DHS.... or even magic kingdom (which is experiencing HUGE crowd problems) besides closing the entire resort for a year and doing 24/7 construction during that year to add more people eating attractions, add more real E tickets, and fix all the problems that existing rides have.
There are so many things at WDW that need to be gutted and started over... most of Epcot, Space Mountain, everything at DHS that isn't the new additions/TOT/RRC... I don't know even how to start or WHERE they should start. They sat on these problems for so long that they've built up to the point where I'm afraid it's never going to go back to the grandeur/innovation that once existed.
Ironically, the rides that would have aged the best at EPCOT (original Journey Into/Horizons) are now... gone.
If the original version of the Imagination Pavilion stood today, it would be regarded the same way Mansion or Pirates is now.
But hindsight it 20/20.... and hubris is boiling tonic on a sweltering day.