Something to also..say, if you will.
Jurassic World, should be a finished trilogy by the time Universal's new park opens. Why not strike now, while you can still fully capitalize on the Dinosaur's established; such as Blue and the I-Rex?
Hollywood, while not having a good amount of land for something more, is doing that with the River Adventure revamp. Osaka, is also playing smart; as they brought Jurassic World into the parks in a larger scale first with Universal Spectacle. And as Beijing will be opening by before the time of JW3, I think it wouldn't make sense for Orlando to hold off.