Zoro most likely, I used to think he needed a fight to prepare him for King, against someone like Smoothie or Kyoshiro but once he's mastered Enma, I don't know if he needs a fight to prepare him.
Whatever happens, I believe Orochi will send forces to Tokage port to stop the ailliance from raiding Onigashima, I think Zoro and Luffy will flex their new strength there against somebody like Kyoshiro, Smoothie or some Flying 6.