Yeah, God’s Valley is endgame stuff, it’s explaining the motivations of three different D’s, the Celestial Dragons and ties in with the lost history if the world and the Void Century. It’s just nit all that relevant to the Wano story, despite the fact that Big Mom and Kaido were there
https://onepiece.fandom.com/wiki/One_Piece_Complete_Collection
Topic: Which characters would you like to go into detail about if you had enough time?
Well, there is a helpful means named "
cover story" in ONE PIECE for that purpose... Anyway, there remain some characters I want to go into detail. It would be interesting if I focus on Marines. I can come up with a magnificent story about Garp. I'd like to draw some relationship and talks between him and Akainu, Aokiji, Smoker, Hina, Koby who joined Marines one after another, Cipher Pol and Roger.
It would also be interesting if I focus on Revolutionary Army, mainly Dragon. Why do they intend to make a revolution? With what belief? How did they meet? The story about Luffy's birth would be interesting. Many of those stories would be serious.
All of the stories about their lives lead to Luffy!! OK!! I'll draw Luffy!!
Translation: sandman
I cling to this interview as proof Dragon will live up to his hype after the horror of his Reverie non-performance.