Yawn after seeing Yamato announced that she is joining the crew in chapter 1051 u still think she going to magically stay in Wano 😭😭, Also with the role something she can be like Zoro(who is a fighter and apart time lookout)
But the thing is, Yamato telling the crew she was gonna join was played off as a minor gag that lasted a single panel and got immediately dropped as soon as it happened. Chopper didn't even give a shit
And then in the next two chapters, Yamato saying she wanted to join never got any kind of follow-up. She got a couple of minor gag panels with the Strawhats in the next few chapters, but again nothing substantial. Hell she wasn't even included in the big party spread in 1053. Yamato's big "meet the crew" moment was played off as a minor gag and was follow up by other minor gags.
If Yamato really does join the crew, this is actually terrible writing. None of the Strawhats were treated as afterthoughts
in their own arcs. Yamato hasn't gotten any meaningful development at all. She (seemingly) doesn't have any personality beyond wanting to be Oden. Her backstory was shorter than Kawamatsu's. She's spent the entire arc with Momonosuke and only gets a couple of one-off minor gags with what are supposed to be her best friends for life. If Yamato's meant to just be a minor character then that's all fine. But if she's meant to be a
main character then this is fucking inexcusable.
And the difference with Zoro is that being the "fight guy" of the crew behind Luffy is pretty much his whole thing. That's been his whole niche in the crew dynamic. A character like that works when he joins at the start of the series, but you can't do that with another character this late into the game. Plus, Zoro arguably has the role of "swordsman" since that's such a major part of his character.
I could go on and on about why neither Yamato or Carrot will likely join, but you get the idea. Neither of them offer anything unique to the table. There's nothing either of them can do that none of the other Strawhats can't do just as well if not better.