I think people need to come to grips with the fact that the SHs will legitimately be a pirate king tier crew post wano. Kaido is the WSC and Luffy is 1v1ing him.
Oda went out of his way to say Kaido> every emperor, admiral, and mihawk and now Luffy is 1v1ing him. I'm just going to say it, no top tier has feats comparable to Luffy's. Not a single other top tier has been confirmed to have mastered all 3 forms of haki. Luffy has the strongest known tier of CoO, CoA, and CoC. Now Oda is hinting at him possibly awakening a legendary DF.
Luffy almost always walks out of an arc with a higher bounty than the person he defeated. In kaido's case, his bounty is 4.6 billion, which puts Luffy on track to be in the 5 billions post wano. The whole DF thing means that the gorosei would have no qualms about giving him a bounty higher than rogers, at 5.6 bil.
Then you have Zoro, who has awakened ACoC and calling himself king of hell, which is a clear allusion to Rayleigh. ACoC is a top tier power and no YC1 has shown to have this ability
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I think the only threats to the SHs post wano are the blackbeard pirates, and Imu. The admirals are objectively too weak to face Luffy. They're also frankly not important enough either. Luffy is going to pick a fight with the world and the admirals aren't running the world, Imu is. The admirals are 100% taking a back seat to Imu and like it or not, they will likely be defeated by side characters(kid, law, revolutionaries, ect.)