Technically yes, they could have pulled the catwoman without any harm done, really; but her part at least was interesting.
Could you explain what you mean by "details," since you're also saying alot of the scenes were bland? If they were bland, that makes it sound like there wasn't much detail to look at. What sort of "detail" are you referring to?I noticed quite a lot of the scenes were bland, in fact. But so were a lot of the scenes in The Dark Knight. I think if people pay more attention to details than character analysis then they'll be able to appreciate this as one of the strongest movies ever made.