The bottleneck right there in Fantasyland is hard to address without MAJOR rebuild...Might be worth it in the long run though... Build a new PPF where the Circus tent Meet and Greet things are... New generation, new vehicles, like Shanghai just did...Remove the circus Train splash pad and create a new Neverland Experience...Pirate ship, a Tink meet and greet...the works.
Re purpose PPF to a smaller Tangled attraction... Then the big thing: Move IASW completely to EPCOT. In it's place there would be space for yet another new dark ride... Perhaps Pinocchio's Daring Journey...since it is right next to the Pinocchio Village Haus, ..The smaller footprint of that dark ride would allow them to push the facades back and create a larger Village Square... and Voila! Loss of one attraction (IASW), gain three (Tangled, Pinocchio, New Expanded PPF. No Bottleneck...Beautiful refreshed, spacious Fantasyland... One Caveat: They would HAVE to build a new IASW at EPCOT.