Magic Kingdom:
I think there needs to be a Tortuga Tavern Pirate Character Meal. Seriously.
The girls have tons of opportunities to eat with the princesses, get the pirates together and have a rousing time in the tavern! Have sword play lessons, sing a longs, meet and greets. It practically writes itself. Not to mention you have a ton of guests who are always wanting to meet Captain Jack. Here's their chance. It pays for itself in months.
Someone mentioned this the other day, but there needs to be a Legend of Sleepy Hollow attraction in Liberty Square.
Epcot:
Journey Into Imagination, overhaul it fix it. Get John Lassetter and his team on it and figure a way to make it work again. Honestly, this is Disney and they can't figure out an attraction called "Imagination"? Somethings wrong there.
Wonders of Life Pavilion. I'm thinking redo this and work around something to do with Tron and how computer technology/programs are evolving. You could really get some cool attractions in there about real time tech, and heck Steve Jobs sits on the board now shouldn't he have some insight into this area?
Disney Hollywood Studios:
For goodness sake, get more Pixar attractions and expand the Star Tours areas. These are two of the biggest draws aside from Sunset Blvd. Take out BLT and really do it right with Cars Speedway, a Monsters Inc. coaster, Remy restaurant (nice restaurant to offset the lines at Brown Derby and Mama Melrose's), include Sci Fi Dine In into the Cars area as Flo's Drive In., Include the Incredibles in a 3D movie/ride experience (Spiderman in IOA) or guest encounter ala Crush.
Animal Kingdom:
Fix The Darn YETI!
Overall, improve the quality of the food and lessen the sodium content. Buy from organic produce growers. Increase the amount of the salaries of front line workers (shocker) because they are the ones who actually encounter your guests and help them.
A little more than 6 months worth of work. But, that would be my aim.