I mean duh...obviously ZKK had no chance of happening. But I wouldn't call them idiots. This is a forum for people who powerscale the One Piece in their headcanon, we have a lot of smart people here, they just read the series differently to you and I.
There's a new option on the table, though: Domi Reversi Kaido.
I've actually become terrified of my Stussy is Carrot's Mom theories, since that would mean as a one piece mother of a straw hat Stussy is doomed to die soon.
I still believe that Yamato will join post Pluton. Oda named her after japan's most famous battleship to link her to Pluton. Like i've said before, i believe wano will become a sky island after a volcanic eruption causes a volcanic knock upstream, that momo can move around using flame clouds, and at that point, yamato won't be needed to defend it.
I think the Kuja will ally with Wano/Elbaph, and live in Wano. There's a lot of empty territory they could use. And since they're skilled archers, they'd be very good at defending the walls of the country. Yamato is going to get a bounty after she fought an admiral an announced yourself as kaido's child.
I'm in the Gloriosa is Yamato's Mom camp. Since I believe Yamato is still joining the Straw Hats post Pluton, this means Gloriosa is doomed to die soon. Gloriosa will visit Wano now that kaido is gone, so she can meet her daughter yamato.
Once V. Nusjuro shows up and starts the Human Hunt, shit will hit the fan. At first I thought the only 2 things that could Domi Reversi Kaido in Act 4 were either Yamato or King dying, and I couldn't see either of those deaths happening.
Gloriosa dying, though, fits on a lot of levels. If Kaido really loved Gloriosa once, maybe after saving her in God Valley, i can see this being enough to trigger Domi Reversi. This is assuming that Rocks and Harald were Domi Reversid via Eris and Ida's death.
Kaido's mood swings are an underrated aspect of his character. Since I believe that kydo is harold's son and was Rocks' Nakama, Kaido dying via Domi Reversi would fit his character well, IMO. Kaido spent years trying to kill himself, so to have his grief, finally, turn him into a total monster, who then needed to be finally killed to be put down would fit his tragic character.
A big issue with my Wano Act 4 theories was that Kaido wants to create the new Joy Boy, and i was having a hard time coming up with why Kaido would be a Straw Hat enemy still.
Domi Reversi fixes all of this. Now, Kaido can fight against the CDs Human Hunt of Wano, and fight alongside Yamato/King to defend the country, as a Straw Hat Ally in Act 4.
Like with Rocks in God Valley, King and Kaido will have one last fight together, before Gloriosa is killed, and Kaido is Domi Reversi'd. Then, Zoro kills Domi Reversi Kaido, and Zoro's Wado eats Kaido's Fruit.