I think you underestimate the visuals. And future spacecraft likely won't have windows. (I suspect the same for cars), but rather video screens of the "outside world". Trust me, I'm not a critic of M:S. I have gotten more than my share of abuse defending it. Mainly against people who were not going to like anything that replaced Horizons. They make me as sick as those that claim M:S makes them sick. Most of them are lying.
Anyway, if WoL was converted to a mars base and a little imagination was applied (and money) the illusion could be pulled off rather well I think.
Possibly. But thank you for defending it, and although I knit pick, I too believe it is a very good show overall and many have told me that they love it. Especially kids who go on many times. TWDC decided that Sponsor funding would be the primary source of funds for this show, so that prevented it from being an entire "Pavilion" of attractions as we had hoped. Maybe someday they will use the dome as a post show of some kind.
M:S is the first show of it's kind to use extended G Forces to accurately simulate a launch. IMHO Unique. We used the same centrifuge technology used in Space flight testing for the show. To me, this was breakthrough and noble in that it was "Science fact" based and in the spirit of EPCOT. The Mars angle pushed things way out and kept it "Future World".
As for motion sickness, I think it's a Catch 22. When you put warning signs up everywhere that continually overstate the effects of the show (claustrophobia) and continually harp on it, then anxiety and tension builds in the guest prior to getting in the capsule, so the prophesy is self fulfilling to a degree. Or it's a big letdown because they expected this heavy thrill experience and it turns out to be relatively mild. But they need to be there because the lawyers say so. I was told that giving guests the choice of "spin or not", reduced the numbers down to a degree where it's not much of an issue anymore.
Like the "Mad Tea Party", anything that spins has the potential for motion sickness, only you can see the ride running from the queue and that serves as a means of self editing as many opt out before getting in line. This is a big factor. Simulators and indoor coasters have a similar issue as you can't see what you are getting into so the line does not edit itself as well. People can get off dizzy, etc. So they compensate with videos and signage to help the guest decide.
As for Horizons, I still get beat up for that as well, which is fine. I thought it had some great moments in it, especially the IMAX scene and the retro future stuff. The "pick your future" thing was poorly executed IMHO. To me, the memory of that show (like the "Peoplemover") is better than the reality of that show. The weak AA's, mash-up of scene styles, etc. However, I think it's a topic and story that sorely needs to be told at EPCOT in some way and is missed as a balanced part of Future World. But so was Space.
I wonder why the Imagination Pavilion couldn't try and do the Horizon's story as a means of "how many ways the future has been imagined?" How our Imagination fuels tomorrow's reality. Let Figment host it where he's dressed up as Jules Verne, a 50's Astronaut, etc. That seems like a great EPCOT story using the story elements of Horizons and the fun of imagination. Whatever.
BTW- I was shown guest exit surveys that gave Horizons in comparison to other shows a very low or "not even remembered" rating. To WDW management, this was a telling sign and the fact that GE was leaving and no one wanted to sponsor it made it vulnerable. A Space "thrill ride" going into that building was the criteria for which we received the assignment, (in the end, a new building was cheaper) so it wasn't like it was an option to keep it, as the labor $$ got dedicated to M:S.