I did some research on Wikipedia and it seems like alot of there new films have theme park potentional:
2011:
The Adventures of Tintin - based on the old cartoon series. Being developed in collaboration with Spielberg/Peter Jackson
TBA:
Ghost in the shell - sci fi fantasy film based on japenese cartoon
Fatal Frame - live action film based on the horror playstation franchise
When Worlds Collide - Based on the sci-fi novel from the 1930s, would be right at home in florida's tomorrowland
There's probably more original properties that Spielberg is cooking up that haven't been announced yet.
Also, keep in mind the reason the roger rabbit franchise was mothballed was because of a fallout between Eisner and Spielberg. If Spielberg is friends with Disney again we could potentially see a revival of that franchise as it was and in many ways still is a cash cow for the company that is ripe for mining.
There are probably more benefits then I have already posted that will come out of this deal. Not sure whats gonna happen to the Transformers e-ticket now. I was really looking foward to it.