I don't know why, but a game in the style of The Batman movie would be pretty sick. More realistic, less superhuman. You'd feel pretty limited, get hit time to time, you can't pounce from one end of the room to the other, but if you manage to pull off a mission that way, it would feel pretty amazing. Robert Pattinson nailed the way Batman moved and fought, similar animations would be stellar.
I know, I love it too - the first season or two, anyway, before Batgirl joins and the uniqueness gets replaced by Bat-standards.