You think Nintendo has a possibility of not drawing huge crowds? When their newest system is so popular it's still sold out months later? When Mario as a character is just as recognizable as Mickey Mouse and is the face of the entire video game industry? When Pokémon is still a powerhouse brand that sells about 15 million copies with each brand new generation release and untold merchandise? When the latest Zelda is both a massive critical and commercial success?
Suuuuuuuuuuuure. It'll be like Avatar
Just poking fun btw.
When it comes to Harry Potter I don't see what else they could do beyond Hogsmeade/Forbidden Forest and Diagon Alley. If they went with Ministry of Magic it would have to be in USF. Only thing I could think of for park #3 would be Fantastic Beasts.