[/SPOILER
And like WB said, once the one piece is found, the war will start, meaning luffy is pirate king before the final war, which means zoro would be WSS by the time.
If anything wano showed us how luffy is the MC, and not zoro, so thinking mihawk will come after luffy dethroning the largest organization, carrying years of history on his back, just for zoro to still have to fight a guy, really doesnt make sense
And unlike the other SH's Zoro is specifically the combatant.