I'd look towards Mario and Donkey Kong for Nintendo's first go-around. They are the IP's that made the company iconic in the first place.
I know it's been heavily rumored of Mario Kart and Donkey Kong Mine Cart, with some whispers of Yoshi's Island but I think it's going to be the most interesting to wonder the size of Nintendo, with Japan rumored to take potentially Amity and UOR being heavily rumored for a good while of Kidzone.
And as for Pokemon, Pokemon owned with Nintendo, Game Freak, and Creatures. As for if it'd be possible for USH, I'd doubt it due to land restrictions. I'd look to Orlando and Japan being more likely cases to seeing it than Hollywood.
But another thing in the terms of what was implied, was that they want you to feel like you stepped into the screen of the video game and into a world that immerses you everywhere; almost like a certain fictional area of London that has been rumored to arrive at USH in the future. I know people are expecting Screens for Nintendo, but I'd look to other forms of effects that can imply that more well than Transformer/FJ like screens or VR (Unless if AR; Augmented Reality is used..).