She’s certainly got the look. Catwoman has never been among my favorite Batman villains, though. I think a Zodiac-style serial killer as the Riddler, and a mob-boss Penguin might fit better in Chris Nolan’s pseudo-realistic universe than Catwoman.
Catwoman, Mr. Freeze, Bane, Poison Ivy, etc. might be more difficult to write realistically ... though I wouldn’t mind seeing what Nolan could do with Freeze. Clayface, Man-Bat and the Killer Croc would be almost impossible to fit in Nolan’s re-imagining.
The real questions are (1) will Harvey Dent be back and (2) will the Joker make an appearance? Two-Face didn’t get much screen time ... and they didn’t explicitly kill Dent off at the end of TDK (though it was implied).
As for the Joker ... I wonder if we might get an homage of some sort from inside Arkham. Maybe just from the back, a laugh, a shadowy face, or even an appearance with Ledger’s face CGed (ala Schwarzennegger in Terminator Salvation).
SnakeDoc
Catwoman- as a “Catburglar” former gymnist,
Mr. Freeze as a ritch industrialst (scientist who owns/runs sci-resarch company) comes down with a rare disease, along with his wife) cryogenically experiements by freezing her body cryogenically and himself as well (under Hospital medical supervision), runs his company from inside this chamber, runs out of money has to send goons to steal) becomes “Mr. Freeze” name in underworld.
Bane-An ex wrestler (takes steriods, work especially well with his physiology)
Poision Ivy Botonist who has built up a natural immunity toward some snake, and plant poisions by working at a bio-medical company. She is basically just an eco-nut (terrorist) after some event which causes her to go “nuts” on Intl. Corporations (maybe “global warming” go to her!)?
It’s not that difficult (but does require some elastics with the origin stories/powers), but can be done (in a realistic way, I.M.O.)!
A Riddler who leaves body parts as clues? Creepy, scary and effective-I like that idea!