I heard a lot of people (Chris Nolan included), note that Robin wouldn't work in the current Batman movie franchise. They state the following as being the main reasons:
1. It is unrealistic and dangerous to have a teenage kid as a sidekick because he'll just get harmed.
2. There is a homo-erotic element that cannot be denied once you bring a "live action Robin" into the scene.
3. No one would let Bruce Wayne adopt a young kid, especially since Bruce Wayne apparently burnt his own house down for no reason.
4. The movies are dark and noirish. The introduction of a young ward makes it lighter and campy.
While I understand these points, I think Robin can be a boon to this movie franchise, as long as they make him a "partner" and not just a sidekick. Note how DC sidestep people disliking Tim Drake: they made him his own character and gave him responsibilities that weren't just being the brightly colored target to Batman's suit.
My idea would be to combine several different Robin elements into the story, so you get a general sense of how to make this work for Batman.
1) Make Robin's parents a part of the story. Part of the reason why Tim Drake works is that you really got to know Tim's parents. Also, it harkens back to Jason Todd's original origin story, where Batman hired the Todds as investigators. My notion is that the latest Batman hires the Graysons (a family of escape artist acrobats ala Cirque de Solei/David Copperfield) to help him learn the fine art of escaping and acrobatics. The Graysons think that Wayne is just hiring them because he's a rich playboy that has a lot of money to burn, but really he's hiring them because he wants to learn their tricks.
2) Bring Robin's tragedy to home when things go bad. The Graysons get killed because of their connection with Batman (maybe some villain finds out who Batman is or something like that). Make the tragedy at the circus, where Bruce Wayne is attending. He feels that it is his responsibility to take young Dick in because his parents left him guardianship of Dick Grayson (that way, you have a more logical progression than just the state awarding Dick above any biological parents).
3) Give this part a real "Dark Victory" feel to the story. Dick Grayson is at the house and he's not quite sure why he's stuck there. He thinks that Bruce just wants the publicity, but really he wants Dick to feel safe. Give him the "Tim Drake" moment where he realizes that Batman is Bruce Wayne when Batman does one of those nifty triple flips that makes Dick catch on.
4) Add in a bit of "All Star Batman and Robin" where you have Robin sneak out to follow Batman, only to realize that Batman is really Bruce Wayne. I also love the bit where Robin dresses up like Robin Hood, then Batman shows him why the "hood" doesn't work and says that he should be "Robin." Keep those bits in there. I think despite the other stuff in Batman and Robin, I like little character "reality" bits that Nolan likes to put in his Batman movies.
5) Use a bit from Batman 100, where Robin isn't a crime fighter, but the "recon/setup/cleanup" crew. That's where the whole "son of a magician/acrobat family" come into play. Robin is the kid that sets up the dramatic escapes and introductions of Batman. He isn't fighting criminals (unless he has to). He's just the kid that makes things run smoothly and gives Batman intel (much like Lucius Fox does in this movie or what the Squire does for the Knight in Morrison's JLA books). That's where you can fix the whole "endangering a child's life" by putting the child in the background rather than the foreground. Make Robin like the new interpretation of Bucky, where Robin is a trained to be a bad ass in a different way than his mentor. This makes Robin more of Batman's partner, talking into his ear, than just a boy hostage.
I think if you implement the things that work with the Robin character into the Batman franchise, you'll have an interesting character that doesn't suffer from "Wesley Crusher Syndrome" (ala boy genius who knows more than the capable adults) nor the campy syndrome of having a character designed unrealistically for the sake of emotional beats.
- l.k.