Here's my thing with King, Zoro's already proven to cut through even Kaido invincibility (scales), he's proven to leave a permanent wound on Kaido hybrid, toughest invincibility.
He held off for several seconds, the strongest attack in the series so far, just think, he can hold off for that long, a 2 Yonkou combination attack that can lay waste to an entire island.
So to me, I think my only enjoyment from Z vs King, is him getting black blade. I need Oda to hype King first for me to think Zoro will gain anything from a short fight with King.
Also, even if Zoro fights King,
ZKK's defly not dead, there's too many valid points that've been brought up in its favor, not until the end, but we can't tell you guys how each chapter in the future will be till EOW.