What Would Have Made Fishman Island Better...

[Yoshi]

So much wasted potential here... I'll list a few things that could have made it better.

- The main villains not being rip offs of the Arlong Pirates... They weren't even associated with him.
- More exploration of the Island such as the Dojo.
- Jinbe joining straight after the Arc ended.
- Big Mom actually threatening the Island's existence.
- Shortened length.

 

[Captain Cadaver]

- Hody actually having a good reason for his actions. His "nothing at all" reason was a good satirical take on how many people have racism integrated into their minds from nothing other than the opinions of those surrounding them, but he could've at least had actual reasons for his actions.
- Mentions of where the other Sun Pirates went. We'll likely see this at a later time, maybe when Jimbei joins the Straw Hats, but there could've been at least a mention of where the more neutral members such as Aladinn went.
- Stronger residents on the island. It's very underwhelming to see that Jimbei blows all the other Fishmen/Mermen in the story out of the water (other than maybe Fisher Tiger) and without ES, the only antagonist with even semi-relevant power was Wadatsumi due to his durability. A bar was indeed set on it due to Hatchan stating he was the 2nd strongest swordsman on Fishman Island back in Arlong Park, but I'd expect residents of the New World to be far less fodderish than this.