@Claudio:
Being an "honorary" member means she can't join for real? Also, maybe you forgot or you missed it but something went down with Vivi and Alabasta at the "Levely" so that could change things.
Like I said though; "best chance" is not "good chance". And I still stand by Vivi having the "best chance". Carrot has once again faded into the background this arc despite being in it. That's not how Oda treated characters that were meant to join. So huge let down if she does join.
Yeah, it kinda does. Because at the end of the day, it means her relevancy in Alabasta is important. Regarding the Nefertari Family, something is up and she has become a target for an over-arching subplot regarding the WG. And yeah, she loves her country, she's not abandoning it. She went undercover for Baroque Works to investigate the organization from the inside-out, ended up crossing paths with the Straw Hats, and use their strength to reclaim her family's kingdom. She has stayed there since then and intends to do so.
Carrot, post-timeskip, is the only side-character to have the best chance. She has no obligations to stay in 1 location, actively participated in a conflict she had no intention of being a part of, was imparted with a will by a mentor, and has a curiosity of the outside world to go on an adventure and explore. Despite her lack of screen time and relevancy, yes, I do think she has the BEST chance of joining. It's either Carrot or bust by this point.