It likely became part of a package as the whole park is themed to Nick IP's so was a better deal. A SpongeBob area would be nice in Kidzone but I would be more shocked with them doing it now as they own many popular kids IP's in both Illumination and Dreamworks. Is it possible they could make two areas as when the land was designated for Nintendo they were using a lot of back of house space? Is it possible they could put a land where the current Kid Zone is and one where the back of the house is? Although I think DM is unlikely as it already had a ride and it would not make sense to just relocate it, another illumination (maybe Troll's) or Dreamworks IP would be great.