I think small flat rides like Batwing are exactly what Movie World needs more of.
The old western area is long overdue for a redevelopment. It's entirely abandoned almost all the time, pales in comparison to the "new" western area that came with Wild West Falls and serves no real purpose. The next logical move for Movie World would be to gut this whole area and give it a new theme (Mad Max could be a really effective, seamless transition from the western area), put on a decent stunt show or major indoor ride in the arena and a well-themed flat ride outside it. The graveyard can be relocated to the hill beside Wild West Falls, which easily removes the only thing of interest in this area.