I don't really have much to say that has already been said. Really strange the sudden shift in Yamato not wanting to leave even if you can make sense of it on paper. I want to like the whole farewell with Momo, but I just can't muster any feelings towards him. He's not the unlikable brat he started out as, but like with so much other characters from the arc he just feels so underutilized. There's also the fact that he had so little interaction with Luffy the whole thing of him calling Momo a little brother just doesn't work for me. The whole "here's our flag to raise" moment.
Perhaps in the future on a reread I'll be a little more receptive to this arc, but at this time this arc was just a slog to get through. Some fun characters like Queen with some neat moments, such as Jinbei finally joining. However, those great moments were few and far between with so much mediocrity.
I've been seeing people predicting Carrot could still join. While not against it, I laugh at the idea because if true it would be such a jarring thing with how little screen time she has had since the end of Whole Cake Island.