Just looking at properties coming out in the next few years from WB due to the close relationship between the studios, you've got the new Monsterverse films (Godzilla v Kong, Kong: Skull Island, etc), Mad Max, Sherlock Holmes, Tomb Raider, Dune, and Ready Player One/Two, all of which would lend themselves well to rides/shows.
From Universal you have the criminally underutilized property of Fast & Furious, and Pacific Rim (as a co-production with WB).
There's definitely material out there.
Edit: Just saw Coot's post, The Last Airbender as the next water park would be a solid 10/10 from me. Theme each section to one of the nations *chef's kiss*