Wano is pretty trash.
Aside from the mediocre writting, and the the atrocious pacing and the stupid characters, there's two battle related plote devices i can never accept, and thoes are "enma" and the "raid suit" they are by far the worst power ups in every manga i ever read.
-Kaido and big mom are supposed to be a leathal threat, yes they are strong as hell but they lack aggressiveness too much, that's a major problem with most of wano's antagonists, the absence of bloodlust.
-Kid and the heart pirates have been unfairly ignored, even now they just fighting fooder, while only the straw hats get to defeat the top fighters.
-Wano's worldbuilding is lacking, i know it's important in the grand scheme of things, but the current struggle, the culture, the people, ideology... Are very underwhelming.
There's 30 thousand beast pirates in wano, but their presence before the raid is very rare, there too much room to breath, everyone can still do whatever they want.
-The samurai are the biggest disappointment, so they're supposed to be these sharp combatants but it's hard to believe when ussop can slip notes in their kimonos without getting detected.
The shogun is disappointing.
...