Agree 100%, and I really felt that way as well. Honestly, Miranda Tate shoud've been kicking 'round the background for the last movie at least.
Yeah, I loved Hathaway's Selina, I just didn't feel like she was well developed. I never got a sense of her motivation, but she was a loveable b*tch.
That was my problem though. The beginning of the movie up until the last five minutes she's basically a b*tch criminal who helps out of necessity almost. When she kills Bane, she even remarks how she doesn't agree with his "no gun rule" (despite using his guns lol). So even though they kiss I never got the impression they actually liked each other, except in passing. It's almost like Bruce conned her into the relationship with the eraser-thingy, but how does he know she won't promptly screw him over first chance she gets? She did before, like two hours ago, and did it to every guy in the movie. I never sensed her having a desire to redeem herself, just a desire to survive, possibly to continue her mission. She seemed to relish in being Catwoman, like anything else was just to boring and pedestrian.
Had she been introduced a while back we could've seen more of a come around on this.