If King is defeated by Zoro attack does anybody believe he will return with awakening. King is not Queen. He is fighting Zoro that has a much bigger and more important role in Wano. We even got a flashback with King and Kaido. I don't believe anybody was expecting that. I was expecting a flashback with Queen and MADS but we didn't get it.
We have yet to see zoan DF awakening. I'm not including the jailers because they obtained that power because of the medicine they were given. I'm talking about somebody who naturally obtain awakening.
He would be the perfect candidate. The one thing we can get take from the jailers is their awakening kicked in after they were defeated.
Oda did not have to give Zoro ACoC to use against King. There's a reason for that.