Enies Lobby. Monster Point was always a thing for Chopper(not sure if Oda ever foreshadowed at Alabasta/Skypea).
Franky was a new introduction, so no power up to him.
Usopp was cooler with fire attacks but nothing that he couldn't do before. I wouldn't consider a power up too.
Nami was only using her clima tact in a intelligent way. No power up.
Luffy, Zoro and Sanji. Sanji spinning around and heating his leg makes sense by physics. Luffy G3 make sense by his DF and G2... not so much. Zoro's Ashura is the most stupid thing I ever saw in this manga.
So only 3 true power ups at Enies Lobby(monster trio) with Sanji's being very well accepted, Luffy's half well accepted and Zoro's complete bullshit.
Franky was a new introduction, so no power up to him.
Usopp was cooler with fire attacks but nothing that he couldn't do before. I wouldn't consider a power up too.
Nami was only using her clima tact in a intelligent way. No power up.
Luffy, Zoro and Sanji. Sanji spinning around and heating his leg makes sense by physics. Luffy G3 make sense by his DF and G2... not so much. Zoro's Ashura is the most stupid thing I ever saw in this manga.
So only 3 true power ups at Enies Lobby(monster trio) with Sanji's being very well accepted, Luffy's half well accepted and Zoro's complete bullshit.