if they made a "Star Wars" movie or even a "Superman" movie without using the John Williams theme they would be outrage galore as there should be but they make a batman movie without Elfman's theme and it's okay because no one respects Elfman. the man rights one of the best themes ever composed and it gets sidetracked because he's not John Williams.
Zimmer claiming he didn't want to use it because of a sequel is boring or whatever he said is pretty baseless because the new theme for batman in this movie sounds very similar to Elfman's's theme.
and he also claims that he is paid to "invent" which is pretty laughable considering that all his music does tend to sound the same. the "molossus" track sounds just like his "backdraft" score.