You said Batman was too much of a background character, but then you want them to show Catwoman have 7 years training in Tibet. They only have 126 minutes to accomplish a whole lot of things, and they need the villains to be threatening for the sake of interest. If she was a total wuss he could sneeze on and defeat, then she might as well not be in the movie period. It's a movie, not a series, and you have to give up development.
Also, I agree with what Ishin said When I did start watching the Animated Series after going all Batman squee, I was really surprised by a lot of the episodes. I remember a great deal of them even today because they made such an impression.