One Piece has been going on for way too long for its own good
Stuff like straw hats being mostly static after getting their development wouldn't be an issue if the series wasn't like 27+ years long
Oda is gonna focus on the side quest of Nerona Pipi and give her a 10 dedicated chapter flashback while fumbling all the long standing faves like Smoker, Mihawk, Croc, Buggy, for the sake of side pieces he thought up of in less than 30 min
When you write same shit for 27 years you tend to get tired of characters introduced decades ago too. I mean he even created Shanks 2.0 to write a completely diff fanfic Shanks (his self insert) going full evil