User blog comment:Gourd Roger/Chapter 920: Flashback lengths exactly where they are supposed to be/@comment-24850639-20181009214047

If Dressrosa is any indication, then strap in. The story of Wano is going to be so much deeper than any other we've had so far, because there's way more players that need a resolution to their story.

Kaido - This the climactic arc where we take him down, or at the very least chase him out of the country, so we need to learn wayyyy more about who he is, what he is, and where he comes from. I expect the 'Rocks/Rox/Locks/Lox' connection to come into play here, but that should only be a part of it. I hightly doubt that would explain his race, his origins, or why he became a pirate in the first place.

Big Mom - Assuming she is in fact going to be involved this arc, and the Rocks/Locks stuff should include her too. We know wayyyy more about her, but there are likely aspects of her pirate life from child-bearing age and on that will have relevance to the story. Including but not limited to, her run-in with Roger.

The Resistance - Oda is likely going to frame this story around Oden's life, where Hiyori, Momo, and the retainers will be secondary characters in his story. We should get most of what's relevant about them in this fashion.I highly doubt Raizo or Kanjuro are deserving of their own flashbacks.

Toki - Toki's background alone makes her someone that deserves her own flashback within a flashback. Her Devil Fruit and personal backstory likely contain wayyyyy too many details that are relevant to the One Piece story for her to be someone we don't talk about again. History is incredibly important in this series, and there's no way someone who's from a "distant past" wouldn't be holding some major secrets. I can bet her and Oden had quite the conversation after he came back from Raftel.

Zoro - While I am one of those people who's submitted to the idea that we'll get Zoro's backstory this arc, I'm moreso listing him here because of Shuusui and the history it holds with Wano. First of all Zoro needs to be exonerated, but we also need to hear the One Piece version of why the country of Wano holds Ryuma so dear. If Oda is including little blurbs about peoples history for Reverie like we've somehow forgot them, then I refuse to believe he'll assume people are familiar with the story of Monsters. If the stories do intersect, and Zoro does turn out to be some distant relative of Ryuma then that's all gravy for me.

Orochi - He's a big enough player this arc that we need to learn his story. It likely won't be a full flashback showing his origins, but it will definitely tell the story of why he opposed the Kozuki clan so heavily, and the actions he took to usurp power.

Jibue'mon/Hitetsu - With everyone else listed, the only angle we're missing from the story now is the perspective of someone on our side who's been here the past 20 years, and has seen the worst of Orochi/Kaido's corruption. This would have to be someone who didn't time travel, but has remained loyal to the cause.

I expect something small for the calamities, since we did get something for Katakuri. I also wouldn't be surprised to see something for Chopper, given that Hiluluk lightly implied that he may have seen Wano at some point.