Loved this chapter.
The Wano Flashback, I would have much prefered it if we just got this before we left Wano, but well at least we got it. Yamato's reasoning is still a bit meh, better than the Oden-thing, which really didn't make sense but it's still meh. The reason they're not opening the borders and keeping Wano's defense up is to protect Wano, Dog and Cat are staying behind to protect Wano, Momo learning to control his DF is supposed to help protect Wano, the SH flag is supposed to protect Wano and Yamato is staying behind to protect Wano. It's not like it makes no sense, but definitely wouldn't call it satisfying.
But everything else, 10/10. Not even mad we didn't follow up with Sabo/Revos.
The Rocky Port incident just keeps getting juicier. Can't even imagine what went on there.
Shakky being a former empress is cool. In chapter 522, Gloriosa says, the former empress died from love sickness and the one before that caught it as well, The latter would be Shakky then who left and was 'cured' just like Gloriosa before her.
Seraphim's are very interesting, probably connecting the Lineage Factor/Cloning with the Lunarians, always good to see plot points coming together at this stage of the story.
Hoping for Weevil next week.