Boa Hancock is my favorite female from OP. Her design is perfect, and her personality is amazing. What people misunderstand about Boa is the way she acts and how she treats other people, especially men. It’s because she and her sisters were tortured by the Celestial Dragons (primarily men) and this has left her traumas which is evident because it was shown in the series. It’s expected for her to act that way knowing her backstory. She’s sensitive and vulnerable and she shows this side only when she’s around Luffy.
It’s also obvious for her not to show any emotion and act tough because she is the Amazonian Empress otherwise her acting normal would be a sign of weakness and can give enemies easy advantage over her. This is how things are in real life too.
She possesses all types of Haki, and it was shown at Marineford that she can one hit Pacifistas. She has shown to be strong in close combat but can also attack from range thanks to her Love-Love fruit and she brought down Vice Admiral Momonoga to his knees. I would say that the Love-Love fruit is one of the most powerful Devil Fruits, because the user (in this case Hancock) can apply the petrifying powers of the fruit even if the person doesn’t have “lustful thoughts”, because it also works on non-animate objects.
Hancock is the only character in OP who has worn 12 dresses and it shows why Oda has tough time drawing her, always keeping her the most beautiful woman with different style clothing.
Everyone bashes her because she acts childish around Luffy, yet that’s how people who love someone act around them (obviously in the case of Boa it wouldn’t work in real life because you would need both parties in love). Being her normal self, shy, vulnerable, and outmost expressing her pure love as a child towards Luffy. Luffy is aware of this, he doesn’t judge her, nor bashes her for the way she acts towards him, because Luffy himself doesn’t want to break her heart, otherwise it would crush her completely. Her intentions towards Luffy are pure and she does everything for Luffy to not get hurt.
She’s one of the strongest allies of the SH’s next to Jinbei (now officially a SH) and the Fishmen. I want Oda to show her as fast as possible in the story hanging out with the SH’s. This would greatly improve her character to socialize and get past her traumas. Sanji would be stoned the whole time until she leaves so his presence would irrelevant.