Clearly, what many of you consider to be "dated" in terms of Robin's traditional costume look, I consider more... charming and quaint. It is, by far, my favorite design for Robin's costume of all the ones that have come over the years.
In addition, I find it interesting that despite the vintage traditional outfit's official "retirement" back in 1989 (with the introduction of Tim Drake's new outfit), it is, nevertheless an outfit that keeps popping up even in the most recent Batman lore.
In the context of my ideal "retro" approach to The Batman, I would not have Dick Grayson's civilian garb be anything as contemporary (nor topical) as a hoodie. Therefore the "era" contrast between Dick's "civies" and Robin's costume would not be as drastic as you describe.
Actually, it wasn't very traditional to the original 40's costume at all. It was patterned a lot more after Tim Drake's comic book costume at the time (late 1980's early 1990's), although Dick Grayson in the comics never wore that outfit.
While i certainly agree with you that Tim Drake's costume was more appealing in TNBA when compared to Grayson's costume from the earlier BTAS, it was certainly not an outfit that I would describe as "same as Dick's". They were in fact, quite different. I will say that it was, at least, refreshing to finally see Robin portrayed as a young boy... the way he was originally created.
"Modern Age" ala Nolan and the gang? No. But for me, I'd have no problem with a "retro"-styled approach to a Batman film with Robin wearing his traditional garb. I really think it could work... with some minor adjustments.
Funny thing about that: In 1992 when
Batman: The Animated Series began, (college-aged Dick Grayson) Robin was depicted wearing a variation of the Outfit worn by Tim Drake in the comics. I guess the powers that be at DC /Warners wanted no contradictions at the time between Robin on television and Robin in the comics. As a result there was no trace of (Grayson) Robin's traditional outfit anywhere on that show or its various spin-offs.
But now here we are in 2012, and it seems as though things have changed quite a bit with that production team (Bruce Timm / Andrea Romano/ Paul Dini) in regards to Robin's traditional original garb.
As we all know, an animated adaptation of Frank Miller's
The Dark Knight Returns is about to be released on home video by this production team. Carrie Kelly's Robin character feature's prominently (as she does in the book) wearing the traditional Robin costume.
This production team also saw fit to leave Carrie Kelly's Robin costume design un-changed when they made an adaptation of a scene from Miller's TDKR in an episode of BTNA entitled
"Legends Of The Dark Knight"
And as recently as 2010 when this team produced the extraordinary Batman feature
Batman: Under The Red Hood , they were brave and bold enough to depict Robin's traditional costume (this time worn by Jason Todd in a flashback scene).
They seemed to like this version of Robin so much, the film actually ended with a final image of Robin standing triumphantly atop the Batmobile in this garb.
I've never watched the recent
Brave and The Bold animated show, but i understand that traditional green shorts-wearing Robin has appeared there too.
I think there quite a lot of life left in them little pixie boots.

t: