I am just finishing up an ABC book, and I think it can be hard to do an ABC book based on a swap in general because you may not have photos of the things in the swap.
For example you may not have an I is for Ice Cream photo.
Also, if we kept the pieces to more general disney items they would be more functional in other books, like the characters and the attractions. Leave off the "A is for. . ."
For Example
"Aladdin" for photos with Aladdin and/or Jasmine or riding Aladdin's Magic Carpets.
Big Thunder Mountain Railroad
Castle
Donald Duck or Dinoland
Expedition Everest
I like your ideas. I have Disney ABCs from a previous swap and some have "A is for" and some don't. I can use the ones that don't in any Disney book that I have. Much more useful.