I'm just wondering since I don't know if we'll get Elbaf or other places before Raftel, if Wano is going to be the big New World clusterfuck where everyone shows up to just fight like Marineford 2.0, and Raftel is more Straw Hats vs. Blackbeard.
We've got the Straw Hat fleet out there, the Rebel Army out there with their HQ destroyed or maybe just seeing Dragon show up, all the former Warlords now excommunicado, Jinbe still waiting to join up, Drake still relaying info, Garp still out there to possibly show up so they could do a flashback with him and Roger and set up Kaido more, Shanks and Celestial Dragons doing something...
Dropping it all on Wano, this country that was isolated for so long but then everything in the world shows up on their doorstep instead of the big fight for Raftel would be a different change of pace.