Originally Posted by JosephCAW
it would probably be a good idea to bring him back but not as the only composer, make it a joint effort.
Zimmer will focus on the Superman side since this is a sequel directly from Man Of Steel, but to make it less conflicting, have a new person come in for the new Batman.
I feel like that would make the movie feel a little chaotic. Scoring character themes is a very small part of what these composers do. Most of it is background ambiance or action music. I'd keep it with Zimmer because that would also help fit Batman into the universe that's already been established.