I think that turning Dinoland into South America would be a smart idea.
Dinoland (as a concept) worked better park was supposed to be divided into seperate lands for mythical, real, and extinct animals. However, Everest in 2006 broke that layout, because now we have a ride about a mythical creature that's not in a Beastly Kingdom, but rather, in Asia, the place where the yeti myth originated. I like that. I'd rather see the park divided by location, with everything in the location it pertains to. Allows for more continents, and I think, more flexibility in the long run.
In the same way that the yeti myth originated in Asia, Dinosaurs are believed to have originated in South America. So, with a reworked entrance, Countdown to Extinction (because that's what it will be renamed) would fit in SA. As for the rest of the land, there's so much in that continent from which to draw ideas. And they can do a great job with it, if the Harambe expansion is any indication. The rides would probably need some IP integration in some form. Aside from Up, I can't think of any other Disney movies that take place, fully or partially, in South America. Can you?