Zoro vs Kizaru makes the most sense.
Zoro and Luffy always fight Next level Opponent , they never Fight someone equal or weaker to their previous battles.
Saturn > Kizaru is a fact that some people deny.
1) Gorosei are confirmed to Zoan Holders (I'll go as far as saying they are all Over powered Mythical Zoan). They ain't a case like Orochi was.
Just by having a Mythical zoan on your arsenal Sends you at YC1 levels. Look at marco.
2) Luffy crew is recognised as Yonkou level. One admiral will never be enough to take it down. Aramaki Himself said he wouldn't have if Kaido was still reigning as supreme commander. People might make arguments like Kizaru>Aramaki but Even if they were to fight it will be a extreme fight. Admirals strength is no joke but they are still weaker than Yonkou at the end of the day. Sending Kizaru is pointless. Each buster call has Admiral in its middle , but This time , it's specifically said Current crew is larger than an average Buster call.
And Luffy will fight Saturn.
Yonkou > Admiral , Makes no sense from luffystans who claim Luffy > Kaido , but will now fight Kizaru who is weaker than Kaido. Luffy's gains nothing out of it. There would be barely any power struggle over here. If Kaido was High Duffing Admiral , Luffy should be able to Mid-High diff , which makes his fight featless and boring.
Neither Zoro or Luffy has ever fought someone weaker than their previous Opponent.
And for people saying Zoro will fight Vice admirals.
It's dumb , Kaido himself Said "Adcoc" is only for the strongest among the Strong known people in one piece World.
No vice admiral even with DF hax can surpass any of the Yonkou First commanders. Marco , Benn , King , Kata , Zoro all of them are gonna Fodderise them.
We already saw what VA was capable of in Marineford , even with haki restraint , current YC1 are haki wise beyond Average VA (king being an exception).
Zoro gains nothing from this fight either , even with all 9 VA jumping on Zoro in a 1 v 9 , Zoro wins this.
Why Zoro vs Kizaru makes more sense?
1) Kizaru is kept on matched with YC1's.
- Marineford - only Marco got into a fight with Kizaru , WB didn't even touch him. Only reason Marco was busted because He was put on Sea stones and he was busy with other task in Marineford at the same time. He might have lost but it was mid diff fight regardless.
- End of Marineford - benn was matched with Benn not shanks , Kizaru took a back himself , Ben might have pushed him to High diff but would have loose again.
- Archaeology - he was matched with Rayleigh
2) Zoro needs to improve CoO , who could be better than this than a Light logia user himself. It's a challenge for Zoro , Zoro will take it regardless because he always looks for the way to get stronger.
3) Archaeology Flashback, Payback Basically. Kizaru bullied injured Zoro there. No way Zoro not taking revenge on them.
4) Zoro ain't scared of Admirals , He was ready to throw hands with Fujitora in Dressrosa. He might loose in a high diff at that time but Current Zoro , no way.
5) Out of all the OG admirals , Only Kizaru uses Sword to fight. Akainu and Aokiji are brute strength Character.
Reason why people don't want Zoro to fight Kizaru
1) they are afraid he will be stronger than their fav except characters like Akainu , Mihawk , Shanks.
2) Sanji stans pushing the agenda Because The "Gag" Rivalry between Zoro and Sanji will increase.
3) all the Adcoc users are ridiculously strong but people still refuses to put Zoro in that list God knows why. Him fighting an admiral will just cement it into people brain.
4) YC1 Wankers like Kata and other Wanker don't want this because Zoro as a YC1 will surpass them by a huge margin but it's a canon fact that he will always be better than them. Look at the portrayal of Rayeligh and Benn. These YC1's are built different. Kata , King , Marco , will be left behind by a huge scale.
5) Zoro will increase his CoO level to FS which is a problem to a lot of people.
6) people think he will take Luffy shine as MC , but no as I said Yonkou > Admiral. He already have Kaidou defeat Under his belt.
Zoro vs Kizaru makes the Most sense over here.
luffy fight is Saturn , A zoan user , No way he doesn't know haki , He scars Confirms he's been into battle multiple times. Bald Gorosei has Kitetsu 1 WHICH is a cursed sword in itself and yet it choose Gandhi as his wielders , they are haki monsters themselves.
After all this , If oda Decides to Not draw Zoro vs Kizaru , it's bad writing at this point. Wano was ruined for this reason only. rather than Exploiting Luffy and Giving him multiple L in front of Kaido , ZKK was a better Option. Zoro literally said He wants to cut kaido and moment he tapped into KoH he was well capable of it.
As I have already said , If after ZKK , ZKK 2.0 doesn't happen. I'm done with the show.
And for people coming up reasons like Luffy fights Admiral , Yonkou , warlord First. It's bullshit.
1) Zoro fought Mihawk first > Luffy fighting Crocodile (Won due to plot armour) , Luffy couldn't have won against Mihawk either.
2) Zoro and Luffy both Fought Kaido on rooftop but both lost again. Luffy didn't do shit damage to Kaido after Zoro went down , Luffy himself Was drowning next chapter.
Do not bring up kaido in Act 1 and Bigmam face off.
If you do , Zoro already was ready to throw hands with Fujitora in Dressrosa.
3) Luffy wanting to beat Admiral , only meant Akainu , Luffy vs Akainu is Cemented since Marineford. Not all the admirals. Only the FLEET ADMIRAL. Why would Luffy Fight An admiral who is weaker then Fleet admiral. Luffy also said he wants to fight all 4 Yonkou , BB , Kaido , Shanks and Bigmam.
Bigmam was Taken down by Kid and law , no Luffy involvement. Shanks is predicted to be taken down by BB sooner or later and them fighting no makes sense either way unless evil shanks theory comes true.
Like Law and midd took down Bigmam which Luffy wanted as his goal , Zoro can Take down Kizaru as well. It's as simple as that.