See, Robin is a character that has totally been ruined by fruity Burt Ward. God. The 1960's. What a wretched time. Anyway...Robin could work out really well. When they reintroduced Robin (Sort of, anyway) in Long Halloween it was minimalistic, but great.
What they need to do is not introduce Dick Grayson until at least the 3rd movie. Maybe have the events of Boss Zucco killing his parents be a background plotline. Then in the fourth really focus on his transformation into Robin. None of this..lame pixie boots and panties costume, either. Go with the Tim Drake version, damnit.