I don't see what was wrong with Catwoman. She was gorgeous. She was deadly. She was believable. She was also rebellious and morally compromised, yet compassionate and playfull at the same time. She was Catwoman.
The only thing I didn't like about Hathaway's particular incarnation of Catwoman was that, when in "goggle mode," she lost the cat ears. Otherwise, she was freaking perfect, in my opinion.
I'm a huge Catwoman fan. I think she's the best female character in all of existence. I was very concerned about Hathaway as Catwoman, but after having seen the film, I'm happy with the way things turned out.