To be fair I've only recently returned to the forums after a long break so it's still pretty new to me.
But I wasn't even meaning it as a joke really. Dreamworld has got a lot of work to do if they're going to convince me they can spend money wisely and build the park up to the point it was pre-TRR incident. 225 million buys a lot, but unless they spend it on the following 3 things then they don't have a clue what they are doing.
1. A world class flat ride, I'm not too versed in what innovations have been made with flat rides but they need something intimidating and wild looking to fill Wipeout's gap (not literally, it can be anywhere in the park).
2. A heavily themed and expansive water-ride, be it a flume like Wild West Falls or something else water based. Regardless it needs to be wet, it needs to be long and it needs to be fun.
3. A record-breaking B&M roller coaster. It has to be B&M because nothing looks like a B&M and that alone would impress Joe public (as well as please enthusiasts obviously), the best kind of record breaker is to build a world's tallest/fastest its the easiest to market rather than having all sorts of caveats like "in the southern hemisphere" etc. So a Giga like Fury 325 (only taller) would be ideal. Heck, use the top of the Dreamworld Tower as the crux of the lift hill and you've got yourself a ride that no one around the world could ignore.