If I had to pick something I liked from "Batman and Robin" it would be the lack of color in Robin's costume. Actually they just took Nightwing's costume, made the bird red, and added a cape. I think if the film guys for the new Batman films were careful, Robin could be worked into it with out camping it up.
Y'know, when Tim Drake came around......... That's about when I actually started to think Robin was a good character. The fact he went out on his own and stomped @$$ grabbed me.
First off, I agree with your look of Robin. Tactical yet still recognizeable.
However, if they're gonna to make sequels (and they will), Robin shouldn't show up until at least the third movie. Just my opinion. Let's establish Batman firmly before we bring in the Boy Wonder.