I totally agree, but world building include repeating same players 4-5 times in chapters basically doing nothing? Like I dont mind taking some place in each arc, maybe few pages in some chapters - but all this character were already introduced more than 20chapter ago so why wasting time when after that Oda will rush other aspect in which let be honest fan deserve much more love? fighting and interaction between key member.
Look OP wound have become this big if the story is all about nika nika, mostly would have abandon this manga long time ago if that was the case.
I have been a OP critique like Lee33 and some others.
We all know what is wrong, but we are so hooked to the story that we usually ignore this apparent filler.
This was the same in Wano. Oda introduced number of characters, name them, show their design, and then just keep them as a background to waste panels.
Simple solution: Give each SH a fight. It will solve most of the problems.
But then some people say OP is not a battle shonen, it is not an edgy manga, etc.