With how consistent and ever-growing the lineup of Pokemon is, it would probably be in both companies best interest to future proof the theme park and allow for some changes/additions to be made as future Pokemon generations are released.
I would hope that that future-proofing would not take away from the possibility of more practical sets and animatronic figures, in lieu of more easily swappable AR Figures or digital screens. I also hope that if they do go down the path of future-proofing the attractions in that way, that they actually use that capability at any point in the future. The idea is worrying in the same way any "Black Box" / Swappable theme attraction worries me, because swapping themes is a lot of effort and usually doesn't ever actually happen. It's like, pretty much just Star Tours and the VR Void attractions when those existed.