About Kokoro it seems she said mermaids could walk once they reach 40 (or something like this), so a young mermaid won't do it unfortunately... unless Francky builds some kind of armchair LOL
I don't know. They don't really need one. Nami tells someone where to steer and they just do it. Seems like a fine solution to me.
If someone joins, I guess he won't have special post. He'll just be another nakama
Besides... I think anyone can just sail Thousand Sunny... mostly Franky's the one who's steering it...
I think the roster's complete... unless there's a slim chance that they need a spy and Vivi's the right one but since she's soooooooo far away from them... I would doubt it...
i think nami kinda takes on the role of second mate aswell, I mean she can pretty much tell everyone what to do except for robin and zoro
She can even tell him what to do. And he does it without making a fuss. As long as there is trouble and they need to do something (sea-monster, attack, storm etc).
The rest of the time he just sleeps.
And I think she could also tell Robin what to do. She just doesn't out of respect.
its right after when robin joins and the crew failed to get any information from the sinking ship^^
Robin stole an eternal post from Masura
First of all when Luffy began his adventure he said he would get ten crew members. If that doesn't include him he needs two more. I'd like to think that someone will join the crew in the new ark, but I don't think it's likely. They just two new members concurrently so I think they will probably take a break from recruitment.
Now about probably posts, the helmsman idea is possible, but I don't know if it is really needed. An aerial scout might work or a diver since half the crew can't swim because of the devil fruit.
They need a dance instructor/hypnotist (Jango) and whatever Bon Clay is supposed to be.