Talking about the possible sequels. I would like to see old villains played in a correct way like two face, penguin, mister freeze, poison ivy, ridder or bane. After see what nolan did with scarecrow and ras al ghul, i think that he could do a wonderful job with those villains, for not talking about joker or catwoman.
About the robin issue, if he is introduced in one of the sequels, i would love to see it in a correct way,not the nigthmare that schumacher did. Althougt , knowing the way of work of nolan and his way of think about the batman world, i think that he preffer batman alone in the sequels, but how knows.