Now other than the orochi non-sense.
I would like it if we get more details and interaction between Big Mom & Kaido working towards this new plan. Even more epic would be if Oda decided to showcase them potentially having teamwork in a fight. Big Mom on Kaido's Dragon form coming down with Zeus & Prometeus, with Kaido spamming his fire breath. Bless that. Or them having a back to back moment with Kaido in hybrid form and Big Mom with all 3 of her main homis, as they're surrounded by the Worst Generation and others, going "Ahaha these Kids never learn".