My only question is how will Talia be a threat to Superman ?
I mean, Leviathan has geared up since Morrison's era, as seen in The Silencer, but even then, they don't really have heavy hitters able to go toe to toe with Superman.
Harassing him and his allies, using psychological warfare and terror tactics, sure, but outright defeating him or putting him in difficulty will be hard to present in a logical way.
Plus, Talia is Leviathan for all intent and purpose, so if she's caught, it's all over.
I can't wait to see Bendis tackling all of this.