The fight will start out as tag team and ultimately turn into 1v1 anyways
Anyways Zoro still has a lot of unfinished plotline after his battle with King, such as turning Enma Black (if he doesn't in the fight with King, tbh he doesn't need a blackblade to defeat King anyways), his plotline with Hiyori and Orochi, and finally one final shot at Kaidou above the Flower Capital