
Originally Posted by
lutetapper
The best I could come up with, really, is that Jinbei will accompany Luffy as far as the next island after Sabondy + crew meetup (which is hopefully the one we've all been waiting on for...a while, now), but he likely won't be joining as a nakama. Having a schichibukai on the team just doesn't sit well with me.
As for Hancock joining, the same reasoning above applies here - she's just way too powerful. Despite a dramatic past, I can't really imagine a good chemistry between her and the rest of the crew. That said, I have NO idea how Oda's planning to reconcile that love sickness she has.
Perona? It's definitely more plausible than the other two, in my opinion, given she isn't insanely powerful. Yes, this sparks the debate over whether or not her ability is broken or not...I don't think it is - try imagining her ghosts sucking the spirit out of someone as powerful as Whitebeard or someone like Shanks. I think her ability has a limit we haven't seen, but of course it's just speculation right now. Do I want Perona to join the crew? No.
Barring all three, the person I want most to join Luffy's crew (if it's going to be someone we've seen in the series so far) is Marguerite. I really enjoy her character and she'd probably get along great with the rest of the crew - she'd marvel at Luffy, Zoro, and Sanji being guys...she'd flip her head at a talking skeleton and a talking reindeer (though given Hancock's sisters turn into snakes, the relationship with Chopper might be less skepticism and more sibling-like), and I'm sure Nami and Robin would enjoy having another female to balance things out.
If they pick up Marguerite here, this leaves the door wide open for the (presumably) last crewmate to be a fishman/woman or merman/woman.
tl;dr - Jinbei and Hancock are schishibukai and might disrupt crew balance, Perona is probably the most likely to join but I still don't want her to. My guess is on Marguerite and a 'half-fish' later on!