Aronofsky reveals his Batman
"I was never planning to direct Year One. I was more interested in writing a screenplay with Frank Miller on Batman. My pitch was always very realistic. I wasn't interested in fantasy, I was interested in the psychology of a real man dressing in a disguise to pay out real vengeance. The batmobile was a souped up lincoln continental with a bus engine. It was technical and rusty and extremely violent. They would have never let us have violence."
So it would have been more into the life of the character, as he'd been at the job for years, and I presume from what he's saying the flamboyant characters and villians wouldn't have been there, replaced with realism and darkness in layers.
The interview is over at Moviehole where he talks about many aspects of his work responding to readers questions.
I think I'd still like to see this version of Batman, and perhaps in the future we will, but could we do without the big baddie characters and gadgets? Could we have done without Batman Begins?