Before it was a Cinderella dinner, 1900 Park Fare hosted a villain dinner experience. It tanked. The kids were too scared.
And as for the Little Mermaid rooms? Try to find one for 2012!!!!! They're sold out from their opening date until the end of the year! So far as I can find, anyway. There's a night here or there open - but for anything more than a night, it's next to impossible to find a room.
There's also some sort of limitation with the Marvel superheros. They can't be within the parks. If you remember when Disney promoted the new Tron, the Tronorail was on the Epcot loop. When they did the Avengers overlay, it was on the Magic Kingdom loop - because it kept the monorail out of the parks. Don't remember which blog I read that on. I think it may have been MiceAge.
And I really don't think that the Fantasyland Expansion is very girl-centric. The only thing I would say is girlie is the Little Mermaid ride. Yes - a lot of what they're doing is based on princess movies - but a Be Our Guest restaurant and a mine train based on the dwarves' mine - neither of those are overtly girlie to me.
For those who think there's not enough for boys - there's rumors floating around that Carsland may be coming to Hollywood Studios to replace Lights, Motors, Action.
I think the biggest problem is tying everything to a movie. That's fine for Fantasyland. I think that's the point of Fantasyland. But why are Aladdin's carpets in Adventureland? Look at the landscape of Adventureland before the carpets landed. It was Jungle Cruise, Pirates and the Tiki Room. ALL of those were original creations. Tomorrowland before Stitch, Monsters Inc, and Buzz - it was Space Mountain, Carousel of Progress, WEDWay People Mover, Mission to Mars. All attractions outside of Fantasyland were original creations. There were loose ties (Walt's True Life Adventures inspired the Jungle Cruise....) but, for the most part, it was original stuff. If you start letting the Imagineers actually imagine and stop tying everything to a movie - it may have a broader appeal for both boys and girls. You could also then market tours, recreation and merchandise.
Just my $.02.