The way I see it, I mean this really isn't based on anything but I would quite like a split bounty, 8 billion between Luffy, Zoro, Law, and Kid. So
Luffy's at 3.5, Zoro's at 2.32, Law with 2.5, and Kid with 2.47. Because frankly Kid hurting civilians is no longer a reason that he should exceed Law, the one who put this whole plot together.
But I like the idea of them all sharing the credit for beating the two emperors, and in Zoro's case that really depends on him returning to the fight.