As you know,
Every arc, one straw hat star is shining. And I want to learn your thoughts. My list :
Arlong Park : Zoro and Sanji
Alabasta : Mr Prince Sanji
Skypia : Sanji
Enies Loby : Sanji
Thriller Bark : Zoro
Dressrosa : Zoro
WCI : Brook
I made list based on role of the arc. Like Brook stole copy.
Arlong Park:
Straw Hats: Zoro and Sanji
Non Straw Hats: Genzo and Nojiko
Loguetown:
Straw Hat: Nami
Non Straw Hat: Dragon
Whiskey Peak:
Straw Hat: Zoro
Non Straw Hat: Igaram
Little Garden:
Straw Hat: Sanji
Non Straw Hat: Dorry and Broggy
Drum:
Straw Hat: Chopper
Non Straw Hat: Kureha
Alabasta:
Straw Hat: Sanji
Non Straw Hat: Ace (annihilated the incoming Baroque Works fleet)
Jaya:
Straw Hat: Robin
Non Straw Hat: Monkey Alliance
Skypeia:
Straw Hat: Sanji
Non Straw Hat: Ganfor
Long ring long land
Straw Hat: Zoro and Sanji
Non straw hat: none
Water 7:
None
Enies Lobby:
Straw Hat: Sanji and Merry
Non Straw Hat: Paulie or Kokoro
Thriller Bark:
Straw Hat: Zoro
Non straw hat: Lola
Sabaody:
Straw Hat: Sanji
Non Straw Hat: Kuma and Rayleigh
Fishman Island:
Straw Hat: Nami
Non Straw Hat: Seakings and royal family
Punk Hazard:
Straw Hat; Usopp
Non Straw Hat: Law
Dressrosa:
Straw Hat: Usopp
Non straw hat: Sabo
Zou:
Straw Hat: Chopper
Non Straw Hat: Momo
WCI:
Straw Hat: Brook
Non Straw Hat: Pedro