User blog comment:Eustass el kid/New Nakama Hate?/@comment-99.44.162.205-20130425021118

Its actually quite easy to determine who will be the next nakama... Its just harder when your guessing at the beginning of an arc without any proper detail on their character that your proposing...

The way that you know who the next nakama is if they have a flashback, if a character does not have a flashback about something tragic happening in their past for at least a chapter than they will most likely not join the SH's...Usopp is the only exception as he way introduced waaaay early in One Piece... Jimbei has a flashback so he could possibly join the SH's- and Kine'mon and Momonosuke's past has been alluded to its possible that maybe both of them join the crew