Nothing is ever completely restored to the original after it's already been changed for something else (ie, Tiki Room, Capt EO). The ride track was shorted over a decade ago to move the Imageworks downstairs since the upstairs was closing. The old track path is still under the floor but the renovations have made it nearly impossible to bring back without replacing the foundation in this area. The old turntable portion is gone as well even though you can clearly spot it's location in the postshow area.
The original concept for this ride was actually placed in the Land building and had roller coaster elements to it. I don't think we are going to see any of that or even the original as we know it with the record that Disney has with their ride referbs. Proof is in the pudding.
In order to use this ride system the floor of the building needs to be completely level (like UoE). Imagination has many different elevations in the building and they would need to remove all of the foundation to make this happen. Remove the foundation and you'd have to completely tear down the building due to it's age.