I'm having a hard time with how lacking Yamato changing her mind was handled. And it's not a "I wanted Yamato to join and I'm disappointed" take. I'm fine with the crew being complete with Jinbe.
It's Oda hammering panels after panels of her saying that she will join and not even showing the convo of when she said to the crew that actually she wants to do a tour of Wano before leaving.
I could have accepted it more easily if it wasn't handled so casually in one off-panel convo and one panel delivery following a chapter ending focusing on her.
Also, that reason to stay behind for a while is weak. Maybe the future cover story can make that tour interesting but right now a delay to tour Wano seem so boring.