No more flashbacks at least not before the fucking war, please.
Then you also have to factor in Yamato's (if shes a Strawhat) and Zoro's (if his relevance to Wano increases). I still personally think Yamato is Kaido's and BMs daughter, so if Kaido gets an origin/Rocks flashback with BM, then she will be part of the back end of the flashback and we will see her tragedy there.
As for Zoro, I still have this theory that King is the one responsible for destroying Ringo, not Kaido. He killed the Shimotsuki clan members, and will recognize Zoro's appearance because of it.