How can they become more powerful? I've been wondering this what do they have to do to become stronger. It's not like they can increase their spirit energy or any of that other stuff what do you guys think could make them stronger. I wonder because of how Usopp felt about how reckless luffy became in order to defeat moria and i think this could be a serious issue.
Luffy- Gears only bring him to a certain level and i don't think they will be a huge factor when coming to the new world.
Zoro- Has Asura which may possibly launch him to the next level if it becomes fully developed or mastered.
Sanji- Diable Jambe his strongest attack was able to defeat one of the CP9 with it doubt it would have done anything to Lucci. I don't think this technique can take him much futher what can he do to be elevated to the next level.
Robin- Alot of clutches and grappling. She needs an upgrade in her physical strength and hand to hand combat. I doubt that she would go the route of judo but she needs a something to push her over the top.
Franky- he's an Cyborg so it would be hard for him to become stronger. He can't really undergo physical training to be stronger. He needs an upgrade or something.
Nami- Had a weapon upgrade in the last arc. Made her stronger several folds. I think she would need some way to upgrade her speed and the power of her weapon.
Chopper- He has the rumble balls. After overconsumption's of the rumble balls he becomes Monster Point. He has no control of the Monster Point. So an upgrade of the rumble balls and being able to control the Monster Point will ultimately lead to chopper becoming stronger.
Usopp/Sogeking- Snipper no hand to hand combat skills. Fails to hit fast targets. Takes hits well and he's fast. Weapon Kabuto. Deception is his best tactic. Need strength upgrade and a weapon upgrade. Needs to be able to hit fast moving targets.