John is like forever fourteen years of age when it comes to maturity. This man is never, ever going to smarten up. He cons God and Satan into curing his cancer so he doesn't take over Hell from Satan. I mean look at this dood
Or at least I presume that is where it was going to go. The showrunner talked a lot on twitter about that arc and wanting to do it. Plus Golden Boy. Hopefully, we get to see that in this ~animated~ show.