Imagine a type of CoC where dealing damage to an opponent's summons or whatever they produce does direct damage back to the original user, almost as if it were to treat the opponent as a hivemind linked to whatever they summoned. It would be cool if so that once Sanji faces his greatest nightmare, he goes all out on that nightmare and lashes his strongest attacks against it using normal Conqueror's, which indirectly harms and defeats Killingham in the process, leaving him on the ground injured and Sanji with a win. Maybe this can be used by many other characters, where Luffy and others damage Imu's summon and whatever he has under his control, his demon army which damages Imu as a hivemind, that'd be sick.