There's an interesting rumor over on another disney site that the imagineers are currently testing turning one of the 4 centrifuges into a no-g's option of the ride. Everything will remain the same on that one pod but it just won't spin. They're testing to see how possible it is and trying to make it as good of a ride experience as possible without the take off feeling.
Personally I think it's a wonderful idea. There's no way I'll go anywhere near this ride currently due to my motion sickness and I was a little discouraged to discover that when I got there. I'm very excited about this option though.