I would prefer to see more of anything at Animal kingdom.
I would prefer more continent based animal interaction. Australia/New Zealand, and South and Central America second.
I can't help but think Indy can intertwine in any of the current lands in AK with the exception of Pandora. It need not be a primary theme, but a secondary one to get IP mixed in, and help the merchandising demand.
I think Moana, Brother Bear, the good dinosaur(ok this one is maybe not my first choice), Brave, Up, Nemo, Jungle book and Lion King IP's all have enough substance to them to work in the park for a mini land similar to Shanghai.
Though I think the ticket would be a combination of Central America, Mayan ruins, and just a sprinkle of Indiana Jones, shoe horned in between Expedition everest and Dinoland, and evicting Nemo for another location. I think the Mayan architecture would be a thematic hit and would keep in spirit with the Asia and Africa areas. I certainly feel they could make some sort of Mayan princess movie when it comes down to it