This is more a thought experiment, I know there is no good reason to do it and it would be costly.
Over in DCA, The Little Mermaid promises to be a lavish, highly-themed, $100million attraction. It will have a fairly high capacity Haunted Mansion omni-mover style ride system.
Meanwhile, in the "new" Fantasyland, now 25 years old!, you have high capacity, but shorter, less themed attractions. Each of the castle buildings takes up the same space as The Little Mermaid attraction will take, but contains two or three attractions, not to mention restrooms, a restaurant and a shop.
My question: should WDI consider putting a single, highly-themed dark ride in each castle building, using the higher capacity omni-mover system?
Obviously, that would mean removing 3 attractions. Would that be sacrilegious? Could they later be re-added in other parts of Fantasyland, say the Motor Boat Cruise or the Fantasyland Theater areas? Do children prefer these shorter, less themed attractions to the more lavish TLM/HM style ones?