It kind of feels like the main function of this volume is to move all the pieces into place for the climax. (But I do love the climax itself! Coming up, volumes 31 and 32.)
I find I'm able to appreciate the development of the Skypiea/Shandia plot much better this time through. The first time I read this arc, I think I was just hopelessly confused.
Journey to the island in the sky results in overuse of "scare quotes."
I think I just figured out why Skypiea is not my favorite arc -- among other things, way too much fantasy worldbuilding. The hints at future plot developments remain fascinating, however.
Off to Skypiea... after Oda hits us with the firehose, again. (I don't think any two chapters in all of One Piece are as dense as chs. 233 and 234. But wow, so much amazing stuff.)