After reassuring back at Whole Cake Island that Jinbei was going to be the 10th SH member, many have already started speculating who the next member will be with the entrance of the Wano arc. Some think it's Carrot, others think either Tama or Kiku, while a few even go so far as to pitch in Caesar. While all of these are indeed possible, I believe many have also failed to look back on the consistency of Oda's selection process. And what is that, you ask? Well, it's simple: who fills a vital, non-combat role on the SH ship that no one has taken just yet. As a review, here are those roles: Luffy - Captain Zoro - Firstmate* Nami - Navigator Usopp - Sniper Sanji - Cook Chopper - Doctor Robin - Scholar* Franky - Shipwright Brook - Musician Jinbei - Helmsman Before proceeding, let's clear out the ones noted above. First, Zoro as firstmate. Yes, I know, it's very arguable. But aside from that, I really can't think of any other non-combat roles that he has, so let's just consider it for now. Next, Robin as scholar. Yes, I know, she's specifically an archaeologist. But i think the general role of "Scholar" is much more appropriate for the majority of what she does, which is to share and use her knowledge on different fields of study instead of just archaeology. As you can see, such are the primary roles of each member. And based on my research, these roles already comprise the majority or essentials of a ship's crew in the past (pirate or navy) and present, save for some minor roles or roles that are simply administrative in nature (for example, the Quartermaster). If that's the case, how then can any other character be qualified to join? Well, it can go two ways: 1) Oda goes for the minor roles, and 2) he starts to consider combat roles. If Oda goes for the minor roles, I believe it will boost Carrot and Tama's chances. Carrot because of her potential as a Scout who has far-sight and infiltration capabilities, and Tama because of her identity leaning towards a Cabin Boy/Girl, which can serve as her training to becoming a ninja. If Oda shifts to combat variety, Carrot can also pose as the speed-type brawler of the group given that she has Electro to compensate for lesser power output (not that she isn't strong or anything). Kiku is also a possibility and she might serve as a different type of swordsman as compared to Zoro and Brook (special technique-focused swordsmanship in order to compensate for her being a woman?) Well, those are my thoughts on the matter. Some may be subjective, but I did try to do some research about it. What do you guys think?