i think brook will join the crew and if he does i think there gonna need a position for a lifeguard
now before you laugh think about it there going to fishmen island and now they have four devil fruit users more than they've ever had before
Maybe they'll get some sort of fishman swimmer who swims faster than any normal fishman in the water
and plus it would add some conflict between nami and the fishmen maybe she's still scared of them
if this is true than what kind of fish will they get on there team maybe a killer whale who knows
now this last part I'm posting might be a little ridiculous so try not to get frustrated what if Jimbei from the Shichibukai joins think about it we don't know if he's really that strong he could be like sanji strong next he made Arlong quit his crew maybe he knew that was a cold blooded killer so he threw him off his crew because he hated that about him. or maybe he'll here nami's story and feel he must repay her in some way for the damage arlong did to her family and so he would join the straw hat crew in oreder to find a way to repay his debt to her. or maybe I'm completely wrong who knows
hopefully i put this in the right forum section this time