I'm a Zoro fan and warmly hope it occurs.
The odds are pretty high considering how important this arc is for Zoro, Kaido's philosophy of death, Zoro's declarations and what Enma plus the moon prophecy entail. He is taking a break but that doesn't have to be too long and Luffy doesn't seem to be near to defeating Kaido.
I imagine if ZKK doesn't come into existence many fans will likely come to the conclusion that quitting the manga is the ideal choice but most of them probably still won't due their long lasting affections.