In my opinion, I'd rank Nintendo properties this way:
Top-Tier, deserve full lands:
- Mario universe (feat. DK and Yoshi)
- Pokemon
- Zelda
Second Tier, potentially could get smaller but still permanent representation:
- Splatoon (As a kid splash park similar to Curious George.)
- Animal Crossing (Brewster cafe with KK Slider animatronic show and a connected Nookling Junction gift shop... make it happen.)
- Kirby (Kirby Cafe at CityWalk or USF could work. Kirby would also be the perfect property to theme flat rides after.)
Thrid Tier, could get temporary attractions:
- Metroid (Maybe at HHN? The series has a darker tone than most Nintendo properties already.)
- Fire Emblem (could maybe get a Universal Cool event in Japan to promote FE Switch, but that's the most I'd expect.)