I would like to see Robin in a future Batman film. Though I wouldn't mind skipping Dick Grayson and going to Jason Todd. Also I wouldn't mind seeing Stephanie or Damien. I like Dick and Tim, but the prickly relationship Batman seemed to have with Jason, Stephanie, and now Damien could offer more dramatic fireworks. I know he has also had strained relations with Dick over the years, but that has played out over decades whereas his personality clashes with my preferred Robins were more immediate.
Plus if they went to Jason we could get a movie version of Death in the Family which I think could be awesome.