I wouldn't go that far.
-Alabasta
-skytopeia
-water7/eniel lobby
-Thriller bark
-new world introduction
It's true for Thriller Bark kinda (we had to meet that Shikibukai sooner or later), but the plot twist near the end was still interesting. Wasn't the best arc tho.
Skytopeia was also useless to some extent, but there was some decent character development, and it helped show why Luffy and Gold Roger are above the "normal" pirate.
Other arcs flow well with the story most of the time, and they are solid on their own.
XI Wiki



