>>263344895The issue is that the manga completely eschewed the adventure side for the battle side starting around sabaody. The adventure oriented strawhats like Nami, navigation, and Usopp, explorer, suffered as a result. What Oda needed to do was just to accept that characters need to be useful in battle for them to be relevant and toss some powerups their way. But he completely fumbled the bag. No character outside the main three got significantly stronger in the timeskip, and this makes them utterly irrelevant for anything not involving gags or fanservice. And Oda has since then refused to simply power the other strawhats up, probably because he just loves drawing one of the big three saving them in an epic moment. Even times when he actually powered them up, Usopp developing observation haki, have been forgotten. Even powerups as recent as Nami getting Zeus have not been relevant outside of gag fights. Nami has a Yonko caliber weapon and she isn't using it now for some reason.