Zoro facing or fighting is your headcanons relisitically the next threat is Shiryu. And that’s because he has invisibility and is a master swordsman.
Also with Kaido Zoro isn’t facing him alone but with multiple other fighters. It is also your headcanon about shanks. Kaido has already placed Shanks in his top five. Shanks and Kaido could have just had a tastupid essay.
Dude shanks or other name does not matter.
After zoro killing kaido, oda couldn't write hype moment for other mstchups .
Who is the shiryu shit compared to kaido.
Secondly , current zoro couldn't kill kaido.
There is two option black blade and advanced coc usage.
But if oda gives this upgrade , the other arcs what will.zoro take as a upgrade.
Zoro is straightforward character. Aim clear
Matchups clear
Mihawk shiryu Beckmann . Final upgrade for zoro black blade and advanced coc.
So , he cannot get this arc.
Current zoro couldn't kill kaido .
Just I am thinking logical.