I feel that way about Batman in Batman Returns. He gets no development and not nearly enough screen time compared to Pfeffier, DeVito and Walken.
It wasn't so glaringly obvious in The Dark Knight because they spent the enterity of Batman Begins on Bruce/Batman's origin, which the original movie franchise never did - even in the first Burton movie Bruce's story is barely touched upon apart from a few hints and a brief flashback. So I don't mind if Nolan wanted to focus on other characters in TDK, since he already did more than anyone else has done for Batman in film in BB.
It wasn't so glaringly obvious in The Dark Knight because they spent the enterity of Batman Begins on Bruce/Batman's origin, which the original movie franchise never did - even in the first Burton movie Bruce's story is barely touched upon apart from a few hints and a brief flashback. So I don't mind if Nolan wanted to focus on other characters in TDK, since he already did more than anyone else has done for Batman in film in BB.