I also don't see a more accurate adaption of Dick's costume as impossible. There just needs to be the will and they might have it, given how accurate the Burnside costume is.

I don't think the shiny (armor) designs fit Dick all too well. I'd rather movie Dick goes for the fake Kevlar look Batfleck had. There's this costume that went around on Twitter a few weeks ago that has more of the feel I'd like to see:

(Source)

If it has to be shiny armor the costume needs some stretchy material like the ArtFX statue: