Janice Porter is an obvious choice for a new anti-btaman DA. I also wnat to see Strange, but with the latest news that is probably a long shot. As all new members do I'll give you a possible but unlikely suggestion for a plot:
New Israeli-American DA Janice Porter (Marion Cotillard) hires Hugo Strange to help her and the police with his psychological profiling skills to catch Batman. Janice is romantically interested in the richest man in the city, Bruce Wayne, whom she runs into at high society parties. Another participant in these parties is Selina Kyle. At the same time Bane (Tom Hardy) arrives at Gotham after the events of TDK he intends to study the phenomenon of Batman and break him, which will enable him to take control of the new criminal underworld of freaks. Batman is on the run and can’t show himself openly during daytime. But at nighttime he gets a visit from Catwoman who tries to steal from him. That leads him to study Catwoman whom he becomes fascinated of. None the less he tries to stop her, but she is too quick for him. While Batman is out hunting Catwoman he gets surprised and caught by Bane who breaks him, but Catwoman rescues him at the last minute. It turns out Hugo Strange have had his own agenda all along: To take over the freaks. Hugo Strange learns how Bane was able to break Batman and realizes that he has to control Bane in order to control the freaks.