I've just re-watched the BBC documentary 'Shoot for the Moon' on YouTube, and its really made me pine for the classic version of our Space Mountain!
I never got to ride the attraction myself, as when I first visited the park in 2004 I went with my college, we were performing at the Fantasy Festival Stage, we were only at the resort for 3 days so time was tight. When I went back in 2005, I got to ride SM for the first time, however it was already Mission 2.
I've always enjoyed riding Mission 2, but every time I see this documentary, or read what people have written on forums such as this one, I can't help but feeling that this classic attraction should be brought back. The music is so superior, its rich orchestration gives me goosebumps every time i hear it, so I can't imagine how it must have felt combined with the ride itself!
I'm not naïve however, and am aware that this is unlikely to happen