And for that reason, it was a stupid idea.
If I may briefly address the Avatar question (at the risk of getting too far off topic), Avatar at DCA will not be successful BECAUSE it is themed to the Avatar IP. They could make a thrilling dinosaurs-themed boat ride with majestic mountains and forests and enchanting vistas, and it would still be successful because it's NEW. NEW ADDITIONS are almost always more successful than what they replace, at least initally, and that's all that really matters until they add something else new in another corner of the park. (Beastly Kingdom would have been just as successful as Avatar, and been truer to the original theme of Animal Kingdom.)
Even if they were to build a replica of Monstropolis for that corner of DCA, it would be just as successful as Avatar.