I think the strategy for this battle is clear for the SN.
Donยดt let you hit by the Yonkous, donยดt try to tank it, it is clear and that is the point how I imagine the battle:
Law staying outside as supporter and only come in the game when he see enough room to land a attack and hint seek again.
His role is like to help Kid,Killer,Zoro and Luffy the damage dealer.
Luffy+Zoro are the damage dealer against Kaido
Kid+Killer are the damage dealer against Big mom
Of course they switch side to side to make it even harder for both Yonkou, while Law protecting them from getting take any hits.
I think this strategy working as long as Law is up, but that is the point which plot I see coming:
The SN making good damage and then Jack who recover taking on Law, with destroy the strategy and making it even harder.
People though Jinbe gonna face Jack or the Minks again, but none of them reaching the ttop again, with means Law facing Jack make sense. And King coming soon to the top make also sense.