The problem there is that that doesn't describe Hush at all.
Riddler was always the brains behind the Hush storyline, Elliot just provided the cashflow. That's pretty boring when you get down to it. Riddler figured out Wayne was Batman and approached Elliot. Elliot never showed any kind of skill or talent, he was just a whiny brat who somehow managed to plot the murder of his parents at the age of ten and not get caught, despite there being two witnesses. It was the most idiotic deus ex I have ever read in a comic book, and that's saying something considering the ridiculous crap that happens in comics.
You can't even team him with the Riddler, as it really completely takes away the idea behind the Riddler's involvement. Riddler got involved in the first place because he was sick of being a gimmick. You can't jump from his first appearance to him becoming old hat in the span of a single movie.
Honestly, the only resonance the Hush story really had was the hints that Jason Todd was alive. Seeing that there is no Robin in the Nolanverse, Jason Todd becomes a moot point.
The resources and talent to rival Batman, though? Sounds a lot more like Bane to me. The entire story of Hush simply does not work in the Nolanverse for the simple fact that it didn't work in the comics either. It was always just a cheap excuse for Jim Lee to draw the entirety of Batman's Rogues Gallery.
Black Mask, while not as bad an idea, is still pretty terrible. Black Mask has always been a rather generic mix of the Joker and a mafioso. Too much been there done that. In order to get into any of the meat of the character, you've got to spend a bunch of time on exposition, which would entirely disrupt things. You can't just pepper it through the story in any non-linear manner.
The beauty of the Joker was that he has never had much of any motivation outside of being an engine of chaos. Bane has similarly shallow motivation that can get a ton of mileage.
Edit: The more I think about it, the more I remember how much I hated Hush. It was probably the single worst Batman storyline I have ever read. The dialog was coarse and cheesy, the plot was a fucking mess and it was all just one big fucking plothole. It read like bad fanfic and I'm surprised it didn't just end with Robin and Nightwing fucking because it was one step removed from fucking Harry Potter slash fic.
Aside from the aforementioned ridiculousness of a fucking ten year old managing to pull off a diabolical plot to kill his dad and not get caught, there's the following:
The Riddler manages to get to a Lazarus Pit. How in the fuck does this inept twit manage that exactly? Ra's has them protected by the fucking League of Shadows. How exactly did a guy who compulsively leaves clues because he really wants to be caught, much less one with a brain tumor, do that? Did they just assign all the new guys to this pit or something?
How in the hell does everyone suddenly know who Jason Todd is? Yeah, everyone knows that Joker killed A Robin, but if it were actually widely known that it was Bruce Wayne's dead/missing ward, wouldn't that kind of make it obvious? This is a plot hole that has continued to run to this day.
The entire Harvey Dent subplot. WHAT?! Seriously, what the fuck? Jeph Loeb managed to write the absolute definitive Harvey Dent/Two Face story in the Long Halloween, yet he can't get this shit straight? How is it that a brain surgeon is somehow capable of fixing a guy that no cosmetic surgeon has ever seemed to be able to figure out? At least James Robinson tied this one up a little bit when he retconned it by having Two Face reemerge and re-scar himself.
Kryptonite lipstick? Seriously? Fuck you, Loeb.
KRYPTO THE GOD DAMN WONDERDOG?! ARGH!
If any semblance of that twelve issue pile of utter shit EVER makes it onto the big screen, I will burn down Time Warner myself.