Zaza might become a bigger threat once she loses control. Maybe she's meant to be a 2v1 for Sanji/Zoro?
Either that or she kills Sommers/Killingham so that they don't have to.
Imu is going to get the drawback from those 2 dying, so I expect him to leave immediately after. Plus there is still Gunko's role, The owls secret, Usopps plan, and Hybrid Loki. I don't think Oda is gonna have wings go over there.