I would really hope that a Pokemon land replacing Simpsons brings Diagon level changes to that side of the lagoon. I want them to demo pretty much all of it back to the Sprung's.
These are just random ideas thrown at the wall, but Pokemon is the biggest media franchise ever. It deserves at least as much as Potter and Star Wars. It needs much more than a single showbuilding ride, a spinner flat, and a series of box-y lightly themed quick-services. Those work fine for adult animation, grounded Simpsonland, but not so much for the stylized and specific looks that many Pokemon locations have.