DCA. Just DCA in general.
The most confused park in history. Waste of space and a disgrace to be located across the path from the greatest theme park in the world.
That sounds harsh, but really, Disneyland deserved better. There are some spectacular areas of DCA (Cars Land, Grizzly River Run, WOC) but the rest is just sad to see. I almost wish Imagineers could go back in time and somehow rework the Westcot idea or build something similar to Tokyo DisneySea.
Anything. ANYTHING over what DCA is now.