All of this is still going to be addressed. Pluon is a huge plot point in One Piece, and Oden's dream of opening Wano's borders involves it. We just had Lucci and Kaku, known for kidnapping Robin over Pluton, reappear, and we're dealing with ancient science tech, now.
We just cut back to Wano, because, why? An earthquake ripped across the whole world due to Imu firing his flying death weapon.
That earthquake will free Big Mom and Kaido from their underground magma prison, either by draining the magma/lava through cracks in the earth, or cooling it with sea water, allowing them to rise forth once more.
There's no way the Straw Hats are going to be able to escape Kizaru and this fleet, even with their Sunny/Vegaforce combo idea. Kizaru can catch up with them. Hell, the Blackbeard Pirates haven't even revealed their hand, yet.
Egghead is Ohara mixed with Sabaody; an island being threatened by a massive military force for harboring information about the Void Century, with Luffy directly challening a Celestial Dragon. We think we're going one place, Fishmen Island, but, instead, big Kuma teleport.
Egghead ends with a mass S-Bear teleport, IMO. Not sure if everyone goes to the same place, but, Zoro will wind up in Wano, with Tashigi in tow, either through her showing up at Egghead and being teleported, or through the Marines invading Wano.
I'd also like Luffy to be there to fight Big Mom, but that will probably be saved for Elbaf, due to Linlin's ties to the Giant country.
Everything you listed was being set up for Act 4:
Zoro will visit Ryuma's grave, get the Nidai Kitetsu
Zoro will round up the Samurai, and defend Wano's borders from the Marines and Pirates
Zoro will be recognized as Ryuma's descendant, and a new Sword God, a hero of Wano
And Zoro will uphold Ryuma's legacy by slaying Kaido over the Flower Capital
Good old Finalbeta, ZKK really was a blessing in disguise for him
