You can pick any number between 1-6 in who would fight Kanjuro and none of them would be Zoro. It's not a fight Zoro would be emotionally invested in. Sure, he'd be annoyed there was a traitor in their group, but the fight with Kanjuro has more weight if it is against one of the other Scabbards, no one else.Think could go like that or could be Zoro vs Kanjiro to avenge his betrayal or new underling of Orochi's to fight Zoro.
I wouldn't say Orochi is fodder or that he's overhyped or even hyped, not in the sense you're probably thinking of; which is as a possible opponent. He's had good character build up to show his importance as a villain and the obstacle he represents to Wano's future and the scar that is he for the Kozuki family and its retainers. For opponents like him and Kanjuro, the potential fights have a more emotional importance than many others that will occur in this arc.
