I'm happy to say there's far FAR better versions of those videos coming next fall
What we do know about the closure of JII;
Futureworld was undergoing its first overhaul
JII was expensive to maintain
Kodak wanted to go "hip" (see Food Rocks)
The ride system and in particular the rotating Flight to Imagination interlock never fully functioned as designed. The latter was still a constant issue. It was ahead of its time in 1982 and was never revisited (today it would be simple)
A smaller overall floorspace would be easier and cost less to maintain.