From watching the full POV, I think my biggest gripe is the story
Not to beat a dead horse, but this could have easily taken place in the "Universe of Energy" pavilion, and with some clever writing, could have included some educational aspects in the pre-show.
It feels like it leans a bit too much in the "sci-fi" direction for me
Also, I'm not sure what the motivations of the giant robot thing is
I really can't judge the coaster as you really have to ride it, but it does seem the ride is exactly what I expected
It seems like it cost way too much, took way too long, and took resources that could have been spread around Epcot much better
Either way, I'm glad Epcot has a coaster