SilverWook said:

Disney's POTC films and Tron Legacy are good examples of all credits at the end.

The opening title and crawl are too iconic for Disney to mess with. I'm keeping my fingers crossed some sort of distribution deal is cut to allow the Fox fanfare and logo to remain. A silent Disney logo like the first POTC film had might precede it though.

Actually, the first POTC movie didn't have an opening Disney logo at all . It literally opened with the title shot. The "silent logo" was at the very end, after the end credits and the little after-credits scene with the monkey.

Anyway, I've been hoping the exact same thing as you in regards to the Fox fanfare. I don't see why it would be completely out the realm of possibility, either. Fox would only need to be given the theatrical distribution rights. Disney could keep everything else for themselves (dvd/blu-ray, television, streaming, etc). The vast majority of the box office gross would still be going to Lucasfilm, and therefore Disney.