UoE desperately needs an update, but an update that remains true to Epcot's theme. So by sanity I mean that, in spite of their seemingly blatant distaste for theme, that cooler heads might for once prevail and prevent a monumental mistake that would propel Epcot past the point of no return.
A GOTG roller coaster and/or attraction is so ridiculously, totally, indisputably off-theme that it would destroy any future hope of Epcot remaining a theme park at all. GOTG would (I and many others fear) relegate Epcot to Six Flags status.
Amusement parks and theme parks are two totally different beasts. WDW and the Walt Disney Company used to not only understand the difference, they capitalized on it-- and created a whole new class of entertainment. It saddens me to think that folks have forgotten that, or perhaps never learned it in the first place.
As recently as the mid-90s, Epcot was still on track. Destroying Horizons and Journey into Imagination started the process that took the heart and soul out of Future World. Had sanity prevailed back then, and those two attractions had been updated instead of destroyed, Epcot would be a lot stronger today.
Bottom line, you can't have a theme park without a theme. Why DisCo chooses to ignore this most basic element of their own business model is beyond my comprehension.