I think so, there is a great chance that she can join the crew.
First of all, Oda did not say "no! she will never join the crew".
Unlike Vivi who made us understand that even if she is considered Straw Hats etc.. she will always choose Arabasta even more with the recent events of the manga. Even if Vivi sees the crew again and spends time with them, it will be temporary and she will do everything to return to her country. She even says that she loves her country very much and that she can't leave it to join Luffy.
Coming back to Yamato, Oda didn't say stop abandoning the idea of Yamato Straw Hats, it's even the opposite! Oda keeps the hope alive.
Yamato makes Momo understand that even if she doesn't leave now, her steps will eventually lead her to the sea
In no case Yamato said I give up my dream, I don't want to join you anymore Luffy it's even the opposite
She still wants to be part of the crew and Luffy wants Yamato to join him.
In the last chapter where Yamato appears, it is largely understood that Yamato does not want to leave NOW and that the reason is that she does not have the peace of mind for Wano and that she will not be able to enjoy her trip if she is worried but when she will be reassured for Wano she will join Luffy, that's what she says to Luffy !
Luffy tells her that if she wants to be a pirate she will have to tell him and he will come to get her.
Momo does like Vivi
Yamato is like Jimbei WCI
It would be a shame to create a character like Yamato with the past that she has and in the end to say that I will spend all my life in Wano, so much for my dream. Especially that at no time she says to give up his dream permanently.
Maybe it's also a question of power, that Yamato's level is too close to Zoro/Sanji or maybe a little bit stronger and that Oda wants Zoro and Sanji to become stronger and the gap to be bigger before she joins?
It's still possible for Yamato ,Chapter 1059 shows that . I'm not in Oda's head, there's the possibility that Yamato never joins.
Anyway I cross my fingers to see her join and I think we will have a return arc to Wano much less long of course, Wano and Momo are too important to just appear to the war and that's it .