New water ride - still too soon? The dust still hasn’t settled on that incident so perhaps yes, too soon.
Whilst I’d love to see Australia’s first Giga Coaster with massive camel backs and airtime galore, Greg told me that new flat rides were coming soon after Jungle Rush. A look at Intamin’s ride offerings outside of coasters and water rides doesn’t give much room to speculate. For other rides they already have a gyro swing, drop tower, flying theatre, and Jungle Rush will fill the immersive dark ride void whilst a suspended twin hammer will remain solely MW’s curse. A pirate ship would be unlikely and the Tourbillon is both mechanically problematic and not particularly popular in the few installations out there.
My money is on an eccentric Ferris wheel which Intamin calls a coaster wheel. That fills a huge gap in all the GC theme parks lineup - an observation ride - plus provides two vastly different ride experiences in one installation. With few installations of that ride type around the world, it can easily provide Dreamworld with gloating rights by building the world’s tallest eccentric wheel, a record which is unlikely to be bested anytime soon.