I would say Pandora was both ambitious and risky...they still have it in them.
To me, there's a difference between the ambitions. Pandora and Star Wars Land are both ambitious in the sense that they are significant capex investments; EPCOT was ambitious in the sense that it pursued lofty goals.
Even Tokyo DisneySea did not/does not have that type of ambition. They broke the mold when they made EPCOT Center.