I know, I was totally thinking about that. Imagine on the language selection screen, there could be the original Spaceship Earth logo as an easter egg in a corner or something, if you touch it, the screen changes to allow you to choose between Vic Perrin, Walter Cronkite, and Jeremy Irons. It'd be great, because it would only be something you'd have access to if you already knew about it. If they really wanted to go all out with it, they could make the BGM purely out of the speakers in the Time Machine, so that you'd be able to experience the music of each version (or the near-silence of the Vic Perrin version :lookaroun), and they leave the touch screen on to display the differences in the ride from today. It'd take some effort, but it's certainly achievable, and would be major brownie points for Disney and Siemens in the eyes of Disney park aficianados.