I would like to see some sort of Pirates-like boat ride. Endor has to have a river somewhere right? You could have movie screens off to the side showing speederbikes whizzing among the trees and animatronic stormtroopers fighting animatronic rebels up close to the boats . Perhaps utilizing fiber optics for the laser beams.
Another ride option could be an omnimover ride through parts of the Death Star showing Luke, Han and Leia's escape as depicted in Episode IV.
I just don't want any 3-D stuff. Leave that for Star Tours.