Ugh, I'd love it if there was but I really don't believe there will be. I think it's in there for worldbuilding and background and while the plot point or characters introduced may or may not be frequently used in future, I don't think it was set up with the goal of doing anything more than saying, "hey look, it's gritty, dark and mythic," the way a lot of the rest of the worldbuilding has been?

Again, I'd love to be proved wrong, for this to be some sort of setup and for us to find out Azzarello was trying to say something totally different but I just...it fits too well into the rubric of the bloody, nightmarish modern mythology take he's been pushing for me to believe that. :(

But, like I said, I do live in hope of being wrong.