Luffy: Another few forms of Gear Fourth, strengthen his Gear 1 and Haki
Sanji: Strengthen his Haki and double Diable Jambe
Zoro: Conqueror's Haki awakening
Nami: Get more skilled with her baton fighting skills
Chopper: Armament Haki awakening
Jinbe: Showcase all three Haki.
Usopp: Armament Haki awakening to imbue on his pellets and what not and bring back the dials.
That's it. I don't see a lot of fighting