Luffy:
Pirate King Level: For defeating all the Yonkos, Akainu and obviously for finding One Piece.
Zoro:
Yonko Level: For defeating Mihawk, an Admiral, and several 1st mates of Yonkos
Sanji:
Fleet Admiral Level(this will be a smidge lower than Yonko): For defeating an Admiral, several strong pirates and VAs.
Franky:
Robin:
Brook:
Admiral Level: For defeating very strong V-As, most likely ones contending for the position of Admiral....
Crews Final Strength Rankings + Future Abilities/Powerups
Pirate King Level: For defeating all the Yonkos, Akainu and obviously for finding One Piece.
Zoro:
Yonko Level: For defeating Mihawk, an Admiral, and several 1st mates of Yonkos
Sanji:
Fleet Admiral Level(this will be a smidge lower than Yonko): For defeating an Admiral, several strong pirates and VAs.
Franky:
Robin:
Brook:
Admiral Level: For defeating very strong V-As, most likely ones contending for the position of Admiral....
Crews Final Strength Rankings + Future Abilities/Powerups