"Mission:Space" for all it's controversy begat a ride system that was wholly unique (sustained G Force), designed to simulate the launch experience. I'm proud of that aspect, and like Pooh in TDL is wholly unique and takes risks (If they succeed is another discussion). The company replaced the emotional moments we had written in to have more "thrill" as a gesture toward a younger audience and to "give them what they want". (I quit WDI while both Pooh and MS were in production).
Mission: SPACE is really an incredible experience, that took a lot of technological and engineering creativity. As an aerospace engineer who has experienced real zero-gravity, and real increased-g's as a test-flight engineer (see NASA Vomit Comet) I can appreciate the experience that M:S gives. You and the Imagineers have every right to be proud of the experience you helped to create. Heck, I would love to see the whole experience expanded with the "visiting Mars" theme. Plus, it is always nice to get the general public interested in space travel...
I think there is a problem, however, with replacing emotion with thrills, though. Imagination and Horizons were the heart and soul (respectively) of EPCOT, and both are lost, leaving EPCOT with fun and thrills, but not a lot of what made gave it the most memorable "wow" moments. I think we sometimes forget that Disney does emotion and heart well, and in that Disney is able to make both thrilling. We don't necessarily need Pixar characters on LCD screens and interactive elements to be entertained. I was 1 year, 6 months, and 30 days old when EPCOT opened (first visit was in October 1983), and from the first day I remember the park it was my favorite. I was part of a "younger" crowd, but didn't need the emotionless thrills that are part of the park currently.
You tried to inject creativity into Imagineering, and we all appreciate that. Even with all it's downsides, I think your job at Disney is one that many of us would love to have at one point or another. Thank you for continuing to share your thoughts and experiences with us all.