One Piece: Stampede

Most of the movie seems to be little bits of fan service stitched together, rather than a satisfying story. Here's character X. They're saying that thing that makes them sound cool (Zoro), or doing that attack that makes them look badass (Luffy), or trying to do both and failing because that what makes them an endearing loser (Buggy).

At this point in the canon everyone is so OP that that the villain has no choice but to be equally overpowered; although One Piece can do smart villain plots, they work better as a slow burn over a long story arc. This is more of a showcase for as many characters as possible getting their 15 seconds of screen time before the unsurprising climax.

The sweet spot for characters with such a power creep is similar to an RPG; at the low levels they can't do much, and the high levels they are so strong they can just spam their strongest attacks. It's that middle ground where the most fun is to be had.

Unfortunately that heyday for the One Piece crew was around the Alabaster era. The ongoing stories are still entertaining when there is room for is a solid story, character development, and plot twists. But in a movie which is trying to shoehorn in as much as it can, those fall by the wayside in favor of a simple battle royale plot. It's still fun, but it could be better.