Personally I would like to see bubbleworks completly ripped out and a whole new theme added to the ride. None of this half arsed themes. If the ride system is fine then they could keep that, but I wouldn't want to just see another re-theme.
The same applies to Tomb Blaster, I don't mind the ride, but now it just doesn't make much sense when you keep stopping with nothing really happening in each scene, where they used to be a story. If they kept the ride system, they should rip it all out, start again but have a proper story to it. If not rip the whole ride out and build something in doors, a coaster would be good, as planning would be easier due to no noise, height, etc.