I have a thought that by the end of the series Zoro, Sanji and Usopp will all master AdCoC infusion and achieve the status of a great pirate in the final war as they will be the commanders of Luffy's alliance and each will defeat an Admiral; Zoro vs Fujitora, Sanji vs Kizaru and Usopp vs Ryokugyou while Luffy fights against the Fleet Admiral Sakazuki