Wow. I didn't picture this happening.
If Kidd survives, and I believe he might be the only survivor, we will witness how Moriah and Squardo became depressed and shells of their former selves.
We will see why Hawkins and Apoo surrendered to Kaido, why Doflamingo sweated bullets on the thought of having to fight Kaido.
This is what happens to a crew that fights a yonko without SHP plot armor (technically Luffy died against Kaido and the rest would soon have been wiped out/forced to surrender).