The Big Mom Pirates attempt to enter Wano again, but they are stopped by Marco, who arrives along with Nekomamushi and Izo.
Once again, Oda’s butterfly effect is masterful.
Because Weevil was caught up in fighting Marines due to his Warlord status being null and void, Marco likely considered the situation handled enough that he could leave Whitebeard’s island Sphinx and engage in battle alongside the Alliance.
The fact that he brought Izo is awesome, because if anyone has a stake in this battle, it’s one of Oden’s original Retainers. I wonder if Marco gathered some other former Commanders like Vista and Jozu as well.
Sending the Big Mom Pirates down the falls again was a smart move, because in all honesty I don’t think the Alliance can fight two Emperor crews at once and come out victorious, even without Katakuri. I don’t even think Big Mom is going to take an active part in this fight until much much later.
The Big Mom Pirates could climb again, but they should at least be delayed in a manner that is significant for the plot, without knowing what’s up there, who knows if they will try.
So the arrival of the Whitebeard Pirates, Marco sending Big Mom Pirates home, and the internal conflict between the Beasts Pirates may play in favor of the Alliance.