I have been reading a lot of TRon threads here latly any roomer if that is in the works as part of any upgrade for DL. I do think the People mover track rebuilt would be ideal for just such an attraction.
I was just reading an article about Disney working on The Blackhole remake (Great Movie, Maximillian was one bada$$ robot). I think a new 3d film based on blackholes would be a great replacement for the ageing but classic Captain Eo.
I have a feeling that Marvel is the "Bigger and Better" refered to. But, can someone tell me what is "Tomorrow" about the Marvel superheros. It seems Disney is confusing Science fiction with Futuristic. To me, Marvel should go into the Backlot section of Hollywoodland in DCA. I think a Captain America attraction would be perfect for Hollywoodland.
The only problem with that is that Hollywood land is now re-themed to a time period before there were comic book super heroes, let alone Cap or The Avengers. So no, they would not fit in the new old look for DCA anymore.
I still think they will use Tomorrowland as a stage for The Avengers and maybe even use the still standing but not used much Rotating building for that. That would put meet and greet and some kind of stunt show or whatever in a building and the characters would not be outside walking around.
I think we need to quit being so literal with the meaning of Tomorrowland. Let's face it. The place has gone way beyond what Walt Disney originally intended. Even Walt himself said that "...Tomorrow is a heck of a thing to keep up with." Innoventions is proof ot that. It has more of a science fiction aspect to it now. Which gives it more room to add different types of attractions to the land. But whatever the Disney Imagineers come up with is gonna be very interesting.