A girl as Robin: Brilliant
I really like the idea of having Robin being a girl. The outfit suits a girl much more than a boy/guy. Robin's outfit on a guy just looks too feminine/faggy. But on a girl, she looked really good.
I'd love to see them focus more on Robin and make her a more detailed and intriguing character. I know that a lot of people are stuck with the image of a sissy robin akin to toto or something like that. But I saw a much more admirable, intriguing, and interesting Robin with some serious physical talent and skills to be more than just a sidekick to Batman but even better.
I was even thinking that Robin could be some sort of genetically engineered superhuman (much like a captain america) as the future seems like it's about mutants and super human hybrids.... plus, it would fit better with all the other "superhuman" heroes as a "normal" human in reality just couldn't cut it as a superhero.
Robin should be gifted with supernatural strength, speed, and healing (much like a spiderman type).