Powers & Abilities Zoro next Battle probably would be Sky splitting.

[Gintoki]

zolobois really obsessed with sky splitting

 

[HellBlazer04]

Zoro won't do a sky split.
The only way it can happen is if Mihawk also has AdCoC which he obviously won't have since he doesn't need that.
Venus isn't strong enough for sky split to happen.
Janitoryu is fodder.

 

[Bullet]

Janitor ain't doing sky split
It can only happen against Gandhi or Fraudhawk

 

[Alexis2282AE]

That is reserved for Mihawk.

 

[YonkoGodLuffy]

The only time Zoro will be strong enough to sky split is EOS final opponent Nusjuro.