The true question is, will they ever use that plot? It's sat vacant forever and yet they continue to close existing attractions and replace them. Kongfrontation for Mummy, Ghostbusters for Twister then Jimmy Fallon, Alfred Hitchcock for Shrek, Back to the Future for Simpsons, Earthquake/Disaster for Fast and the Furious, Wild Wild West for Fear Factor...the list goes on and on...they don't often use expansion pads(aside from Men In Black).