Something with Sleeping Beauty, hope Little Mermaid is a go, rides with old school Disney characters. Dying for Scrooge McDuck to make a comeback. Hercules cracks me up. Kids love mythology and Greece, Rome, Egypt, Mesopotamia, etc. seem to be lacking in themes.
Disney is affiliated with tv and popular shows. Hoping for a LOST attraction...in my dreams...I know. But there is potential for Hollywood that I feel hasn't been tapped yet or money is on serious hold for now
In general, Adventureland was always and still is underdeveloped. Now with similar theming to Animal Kingdom, I'm not sure what they would do next. A shame the popular Aladdin only got a carpet ride.
Liberty Square has potential. Themed-period movies are in again and there is a lot they could do with that.
Frontierland is probably my favorite and has the best attractions.