So if it truly is Pokémon, what do we want to see?
I'm still in love with the Pokemon snap/safari omnimover idea as a main attraction dark ride. Would love to see some sort of flat ride as well that can eat additional guests. Japanese style cuisine for quick service would fill a spot not yet covered in the USF/IOA areas, and then maybe an izakaya style (I'm a huge fan of Shiki-Sai at Epcot) restaurant replacement for Mythos.
Lastly and more important, for me, is a mixture of the wands and SNW band experience for catching/battling pokemon. Windows similar to wands to catch different pokemon (with your $500 pokeball purchase of course) and then a Bowser's challenge type experience where you can battle gym leaders/the elite four. Not to mention app integration to trade with and/or battle friends.