Wait, what was the info on the wrestling book? I heard it once years ago, but thought Jim was just joking. Do we have any extra info on it?
Not much beyond it's a battle of the various Gods and we will learn a bit more about them. I suspect it will be a bit ridiculous and dramatic, of course.
I do hope Jim does it well because it could come off as cheesy and then it would be really boring.
Yes and no, as far as the island goes, when Harry tells Eb in Peace Talks he could always go and live on the island. Eb makes the comment about how most of the Council hasn't a clue of what the island is. I think so far only Rashid and Eb know what it really is about, at least in print.
Per WOJ, the Senior Council know about Demonreach's true nature (come on, they wouldn't be SC if they didn't know big stuff). They just were too afraid individually to claim it as it would give the rest of them a chance to call the person who claimed it a traitor and have them killed. But they also need the firepower apparently that the island represents, and because they assume Harry only claimed it because he seems just so stupid to them, they tolerated him being Warden. Might not anymore...
In any case, Harry isn't OP. Not by a long shot. Yeah, he has a bunch of tools. But that just means he can play in the big boy league. If he isn't on Demonreach, if he is separated from his Arma Christi, if he runs out of magic etc. Yes he has allies, but so do his enemies. Arguably, they have scarier ones. And Kincaid showed that at the end of the day a bullet from over a mile away is effective enough (which fits right into Jim's whole "humans are actually scary because technology" thing...)
Yes, if Harry goes gunning for someone or a group of someones he can be a real terror. But even Ethniu despite all her preparation and weapons and allies was defeated. At the end of the day, there will always be someone uniquely suited to beating Harry. So Harry's best bet isn't to try and take on everyone. Just the ones he can manage. Of course, life isn't always so easy like that...