Oh I'm not trying to say why I think it is a good fit, I am just imagining what the rationalization is. The distinction between Tomorrowland/Future World is probably lost on some management types. In my opinion original Tomorrowland was probably closer to original Future World in spirit than the Sci-Fi holding area it has turned into. Star Tours is what broke the theme 30 years ago.
You're right, original Tomorrowland was pretty close in concept to Future World. Things like Flight to the Moon (or whatever it was called), House of the Future, and the Astro Orbiters were pretty fact-based. Even Space Mountain can be interpreted as a ride on a conventional rocket, while obviously a sort of abstract interpretation rather than a realistic simulation. But yeah, the majority of what's there now is more fiction than science, starting with Star Tours.
I'd argue that that's okay, since Epcot took over the original mission of Tomorrowland. But now they're just abandoning that mission, which is something Walt clearly believed in. It explains his involvement in world's fairs. It explains why original Tomorrowland was relatively fact-based, whereas Adventureland doesn't make much effort to provide accurate representations of jungle exploration, historical piracy, or the cultural meanings of tikis and the sacred buildings in which they're kept. It's also behind his outlandish dream of Progress City that became EPCOT in scaled-down form.
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I know we're only supposed to follow the money now, and not care what Walt wanted, but you know, what Walt wanted turned out to be a pretty big success monetarily, too, compared to his competitors in film and theme parks who only understood money. I mean, EPCOT inspired me as a kid, and I don't know if I'd be a long term Disney fan if not for it. A Guardians of the Galaxy ride may sell tickets for the next couple of years, but I don't think Guardians of the Galaxy has the power to leave a lasting impression and motivate kids today to bring back their kids fifteen years from now.
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