The alley itself is really cool, and it's great to be able to see the launch. The issue I'm describing is that, unlike other non-fantasy-style roller Disney coasters (Everest, Big Thunder, Matterhorn, Big Grizzly, Sliding Sleighs...), you're being asked to just pretend that the track isn't there at all and that the roller coaster train is an entirely different vehicle (a car). So, unlike those other immersive roller coasters, you're not believably immersed in a world, you're just riding a roller coaster like at an amusement park. I understand that some of you might not mind this, but to me and many others, the "peak" Disney experience is believable immersion (again, outside intentionally fantasy-style attractions), and this lacks that component.
I agree that the sets in the gravity building are the worst offender, of course.