You know, it might be a few movies away (I doubt it'd even happen) but the current Batman vibe would be a good setting for Robin. It would send Batman into a dark pit of "god what have I created" sort of deal. The old movies were obviously too camp to portray any real emotion, except, "you can't do this. you will regret it. ok you helped me, so you can be on the team."
There could be some great tension and brooding if the writing is top tier. I'd like to see this one day. Not yet though, definitely too early in the series for Robins.
EDIT:
Also, the 'god what have I created' thing could do really well, if they put Robin on fast forward for the movie, and kill him off pronto. It'd please me and Robin haters alike.