I like the idea of a totally sane villain as well, but I want some of that imagery and mythic status. I liked Skel in his brief appearance in Streets of Gotham, and personally, I kind of hope if they bring Falcone back again, he gets referred to repeatedly as "The Roman."
So how's this for a version?
The Capo: a Gotham criminal middleman who prefers not to be seen and operates primarily over the Internet and other impersonal methods, and who often uses doubles, stand ins, and represenatives to speak for him. His Schtick is that he knows everyone you need to know to get things moving in Gotham, and is thus a permanent cog in the criminal underworld: he puts street level dealers and hitmen in communication with guys like the Penguin, Two-Face, and Poison Ivy, calls up the corrupt cops left in the GCPD for a fee, oversees most of the successful money-laundering operations, and generally acts as the figure that allows the underworld to keep operating no matter how much Bats tears it apart. His anonymity, networking, and cautious temperment are why he's apparently the only known figure to always be at the center of crime in Gotham, never getting his hands dirty, but never challenging for the top spot either.
And of course, because of his anonymity, he may be a myth used by opportunists, a series of different individuals, a corrupt cop, or anything else.
The Furies: You know how the Wrath is an Anti-Batman? And how his sidekick is Scorn? These are Anti-Batgirls. My hope would be they'd show up only if Wrath gets overhauled back to a serious villain instead of what he was last time we saw him. A gag for these ladies would be that the *3* of them mirror the *3* Batgirls, even if Cass and Steph aren't officially Batgirls. One's a sniper (to mirror and reverse Cass as a melee expert), the youngest is their leader (to reverse Babs as the mentor figure for Cass and Steph), and the third is a loud, obnoxious bomb thrower (to play off the more stealthy aspects of Spoiler in Steph.)