You gotta come to peace with all the possibilities that might happen with Zoro
- Zoro returns to Kaidou: great
- Zoro fights King: still great.
The chance of ZKK is still high either way since Oda won't waste the exlixir wearing out on King so most likely we will have another "Nothing happened" moment. It's a Samurai Arc after all. If Sanji got his big moment against BM at the end of WCI with the Cake, then you can be damn sure Zoro is getting his big moment against Kaidou at the end of the Arc.
But for now, embrace all the possiblities for Zoro's next opponent, and you will never be disappointed.