Oh it shall begin. Because that is dangerous thinking.
It appears that Epcot may be entering its third phase. Now you may disagree with how I group the phases, but it is the easiest way to talk about each period, so just bear with me. This will be a long post.
The first phase was the original park. EPCOT Center. It had attractions that weren't the most thrilling or entertaining, but that were proud to educate and inspire you.
The second phase of Epcot began when GM's contract for World of Motion expired and it was time to renew. But GM decided that they wanted a "cooler" ride. They wanted to have the most popular thing in the park, something that would be on the front of the maps, the headliner attraction! And so the slow World of Motion was replaced by the thrilling Test Track. These attractions are what primarily exist today, and they strike a greater balance between entertaining and educating than the original EPCOT Center rides did. Phase 2 is in danger of ending.
The third phase of Epcot looks to be full of attractions that don't really go with the theme of the park at all. These rides, like a GotG one, would sacrifice nearly all educational/inspirational value. The first of these rides is Frozen Ever After, or possibly Nemo. So perhaps phase 3 has started already.
Now, most EPCOT Center fans see each new phase as a step down. But I don't. While I myself am a fan of phase 1, there needs to be a solid balance between educational/inspirational and entertaining. And if that balance is struck well, Epcot would be a strong park. It's just that there are too many problems with what we have today. Styles that don't match, lowered capacity, some pretty bad rides, and a graveyard in the front of the park, just to name a few.
But phase 3 is certainly a problem. Because if it becomes reality, it'll terribly weaken the theme of Epcot. There is a park called Hollywood Studios right next door, we don't need two of them. If all four parks become too similar, that'd be very bad. Most people don't know it, but they really wouldn't enjoy spending an entire week riding through the movies and visiting four parks that all feel the same. Each park needs to remain unique.
The Test Track example is very important because your thinking today is the same as Disney's and GM's back then. World of Motion wasn't all that popular. It was old and tired, kind of dirty, things were breaking. But Test Track was insanely popular! And it didn't end with one ride. Test Track led to nearly every other ride replacement in the following years, because nearly every other ride was uncool by comparison, and so they had to be replaced to "keep up." The park went from phase 1 to phase 2.
And so the same domino effect of changes would more than likely occur if a GotG ride found its way into future world. The park would go from phase 2 to phase 3. And unlike phase 2, phase 3 is very bad.
If you support phase 3 of Epcot becoming reality, then you should support a GotG ride replacing Energy.