Per Martin on Magic: "I'll just say the green teams mission will make more sense."
I think I'm getting it now. Orange will probably simulate the same space launch mission with new visuals, whereas Green will simulate a Gravity-esque spacewalk. Thus giving you two different options and a more open idea. Probably with SpaceX as a sponsor.
My main issue with Space is that it's a pavillion with potential that squanders it in favor of a dopey thrill ride. This should be analogous to Land or Seas pavillion and had a varying amount of attractions. They're sorely missing an attraction that focuses less on the intensity and thrill of current space travel and more on space exploration. Space is such a fascinating subject and if any Epcot "educational" aspect would woo people, it's this. Not sure exactly how Disney could create something that can provide an extra touch than any science museum, but that's kind of what Epcot always was. Heck, the California Science Center's remodel from the late 90s is a dead-on attempt at trying that same model of Future World old. (just without the rides) Their Human Body exhibit is especially reminiscent of Wonders of Life, complete with an animatronic show a la Cranium Command.
So I'm confident that Disney could attempt something that leapfrogs over that, and giving families something extra to do other than some dumb postshow stuff. A theater show utilizing 4K 3D visuals and possibly hosted by Neil DeGrasse Tyson would be awesome. Just something to give this pavillion some heft.
...and Horizons is never, ever, ever, ever, ever, ever, ever coming back. It'd be cool with they found away to insert the old song but otherwise it's ok.