Don't get me wrong I love Test Track, Rock N Roll Coaster, and Mission Space. But I also love the slow tame ride thru SE, Peter Pan's Flight, and Journey Into Imagination as well. Its good to have contrasting styles of attractions.
Part of the charm and appeal of Disney is its unique rides. If all i wanted was roller coasters I can go to Great Adventure, or Busch Gardens
I think a rehab of the concept they have now would be sweet. Update some of the fiber optic effects and get some darn padding in those cars!

Rich