New thread, so I guess I'll say hello to everyone.
Oh, you guys want my opinions on the subject? Sure.
First of all, I hold the opinion that Jimbe is pretty much guaranteed as the 9th crewmate, even tough it's really weird that he was left behind again at the end of WCI.
As for the 10th, if there's going to be one, I see Carrot being written for the spot. One of my main reasons is that there's a character arc going on for her ever since she got onboard the Sunny, a storyline that was made especially clear when Pedro made his sacrifice and told Carrot that it's important to protect the Strawhats because they will bring the Dawn that the minks are expecting. Of course, Carrot has not yet inhirited Pedro's will, but now that the seed has been planted in her mind, she became the obvious vessel for the narrative to explore the concept, and that's when we'll witness her major character development (as it usually happens in flashbacks for the other Strawhats). As of right now, Carrot's sense of purpose (dream) is not to live with the minks in Zou, since her triggering motivation is to have an adventure in the sea, so it's only natural that the evolution of her purpose/dream (to help bring the Dawn of the world?) will reconcile with her original interest… and becoming a Strawhat is the perfect convergence for her character arc, since she'll help Luffy bring the Dawn while having lots of adventures in the sea.
Of course, the destination of her character arc (which will surely happen in Wano, I believe) doesn't necessarily leads to becoming a Strawhat, since there are other possible outcomes. However, I see some other reasons that reinforce my understandment that Carrot will join the crew. First of all, she was added in WCI without any particular plot reasons other than to highlight herself, and her participation was put in the same position as the other Strawhats, as corroborated by the cover of volume 88, and now she's in Wano to have another adventure with the crew (and I must remember that she's the only mink in Wano right now). Aside from that, Carrot's bond with the crew got so strong in WCI that it's really hard to see her belonging somewhere else right now.
Carrot is also overperforming in other aspects. In terms of characterization, her main archetype is the Genki Girl, but it goes really beyond that, since she's got a wide range of personality traits that make her engaging to read (Carrot is not only energetic, but badass, psychotic, airheaded, cute, girly, overly affectionate, smart, naive without being dumb/gullible), and her own set of quirks. It's also extremely positive that her attitude matches Luffy's, because she is a character that will be easily integrated with any kind of situation that usually comes up in One Piece. Not to mention that Carrot is also a strong fighter (with a great power up), so she can defend herself and will be useful against future enemies. By the way, it's worth mentioning that Carrot has a unique fighting style inside the crew, since her weapon is very different (the claw-gloves) and she specializes in melee combat with very acrobatic moves that are visually stunning and gracious, with added electricity. I also hold the opinion that her design is great, very shonen-like in the context of a female protagonist, with physical traits and silhouette that only belong to her in the series.
Carrot's skills are those of a scout (as shown in Zou), so it's quite obvious that her role in the crew would be the same on land, as well as a lookout in the sea (a legitimate job in a ship), and she's been doing it a lot already.
If Carrot is indeed the 10th crewmate and she joins the crew together with Jimbe, it's really cool how many contrasts/parallels they have.
Jimbe is a fishman (sea/water), Carrot is a mink (sky/air and electricity).
Jimbe is the sun, Carrot is the moon.
Jimbe is a veteran/old, Carrot is a rookie/young.
Jimbe is a man, Carrot is a girl.
Jimbe is big, Carrot is small.
Jimbe is very serious, Carrot is very playful.
They balance each other out really well.
So yeah, #Carrot4nakama