The implications of the sea rise is interesting. Impel Down being the first place to really feel the effects makes a lot of sense and I do wonder if we'll see a mass prison transfer somewhere soon (that'll most likely end in another escape).
So. Many. Locations. Seriously, this chapter was like a montage of islands throughout the series. Didn't expect to see Mock Town or Orange Town at all for that matter. Oh, and in case previous chapters weren't clear enough, Saul is absolutely alive.
The giant robot mech thing seems fairly unstoppable as predicted. Definitely feels like that's what's gonna stop Warcury and any other Elders trying to get the Strawhats once they all get on the ship.
Also, the escape route for the Sunny is clear now. Edison is seemingly staying behind which means Lilith and Atlas may be the only Vegapunks making it out alive?
And now we get the big reveal that Joyboy was the first pirate of the world, a reveal that everyone in the OP world got too lmao. Kinda crazy we're getting the literal origin of piracy but it makes sense that it ties in to the lost kingdom the more you think about it.
I'm still highly interested in the story surrounding Nika though. If the myth predates Joyboy, what the hell is that about?