Great arc overall.
Abysmall pacing at the climax moment. That's a thing with the entire post-TS. there are simply too many "time bombs" being stacked.
Kizaru was main baddie. Then shifts to Saturn. Then shifts to 5 Gorosei, but 5 Gorosei are kinda poopoo outside of their regen hack.
Vegapunk's message is like the spoon killer. Extremely slow and inefficient pacing.
Break weeks/months exponentially increases the frustration this bad pacing has in the story.
Nika glazing or whatever you guys call means very little to me. If you go back and re-read the entire story, Luffy's been at the center of the spotlight since day 1. I might not like the "parallel" Nika=Joyboy=Luffy stuff very much, but that's more like a subjective preference. Kuma's backstory was cool. A bit cheesy, imo, but cool. Bonney is very bland as an "arc's supernova", but could be worse like Hawkins, Kid or Drake's participations.
"Pacing" is, by far, the biggest offender. Pacing not only from the chapters during the climax themselves, but added to the egregious amount of break weeks. There are chapters where you legit feel nothing happened at all. Characters move from point A to point B in one chapter, only to go back to point A in the next. Onigashima had a lot of this as well.
BUt reading the chapter in one go, this issue practically goes away, then it becomes a quite good arc.