What would you like to see in the sequel to the dark knight?

technically a movie question but i ume most movie fans dont know the batman characters or storylines, what would you like to see in the sequel to dark knight? they will presumably have two-face, what other characters would you like to see in it and who would u cast to play them? i've heard talk of charlize theron as catwoman or jennifer connelly as talia al ghul, that would be awesome......what would you like to see?