You know, seeing so many different story arcs from Batman's illustrious history posted here, I have to say: re-imagining Bruce as older and seasoned is a very clever way of incorporating many of the character defining moments that shaped him over the years. By contrast, if you're doing an origin story, there's a certain limit as to how much you can draw from the comics and elsewhere.
In light of this current iteration being a man of 45/46, I fully expect the writers to tap into that endless well of source material in a way that is unabashedly faithful.