User blog comment:Monkey.D.Me/Is the next crewmate of Strawhat will be a Mermaid???/@comment-3242083-20101220235100

Bon clay won't join, his abilities are to similar to Sanjis. But I also believe he is alive. He probably joined Ivankov and the revolutionary army...

Also I hope the strawhats won't get any new members (yes, I'm serious). While new characters are always nice and interesting - they would steal screen time from the existing members. So if i had to choose: More character development > new member.

Thats why i think Luffy will make -of course- more powerful allies in the future (like hancock and jinbe) but no new fulltime members