As of now, I believe that the Straw Hat Crew is the strongest non-Yonko pirate crew, with very reliable members who excel in battle, navigation, stealth, medical knowledge, archeology, and engineering…
They already proved themselves to be a real threat to the World Government and pirates as well, but as foes get stronger with each arc, Straw Hat members are ought to improve as well in what they do, especially in battle and fights.
As the way I see it, I think it will goes like this:
Luffy
Unlocks Awakening
Gains Advanced Armament (Rayleigh’s Technique revealed in 937)
Proficient in Future Sight (Advanced Observation Haki)
Unlocks Gear 5 which would need him to reach Advanced Armament Haki as well as Awakening his devil fruit, thus turning everything he touches into rubber.
Zoro
Gains the Nidai Kitetsu
Turns Wado Ichimonji to a Black Blade
Shusui is returned to him
Nidai Kitetsu empowers his Asura
Unlocks Advanced Armament
Improves Observation Haki
Learns to cut fire (Fighting King)
3 O Wazamono Swords (Nidai, Shusui and Wado)
Sanji
Raid Suit :
-Invisibility
– Accelerators increase his speed and kicking force
– Armoured Legs (Like Steel)
– Floatation devices (Allows for flight)
– Cape (Sanji uses this as a shield)
Unlocks Future Sight (Advanced Observation Haki)
Unlocks “Blue flames version of Diable Jambe” (Increased Heat)
Sanji’s Raid Suit is modified to be a normal black suit, with a cape. Also, Franky changes the canister into a belt which Sanji activates by pressing on the buckle
Usopp
Kabuto has seastone coated on it (Increase range and power of shots)
Usopp will become proficient in Observation Haki
New variations in ammo
Franky
Shogun Franky becomes more streamlined, think Isaac from World Seeker
Franky upgrades his suit to incorporate Seastone into his fists
Unlocks Armament Haki
Nami
Zeus
Climatact infused with Seastone
Flight (By riding on Zeus)
Unlocks Observation Haki
Is able to create a thunderstorm over a country (Ultimate Move)
Nico Robin
Flight through Wings
Creates a giant Clone of herself (Full Body Clone)
Unlocks Armament Haki
Unlocks Awakening of her devil fruit thus making her able to create physical copies of everything she touches.
Chopper
Accessing the Monster Point without a rumble ball
Improves endurance
Unlocks Armament Haki
Brook
New Sword (A Meito- Personally I think he should get one of the 21 O Wazamono Swords)
Greater Ice Generation
Unlocks Armament Haki for his sword
Unlocks Awakening of his devil fruit, allowing him to manipulate souls of everything he touches.
*Theory by stealth_hawk
