Imo Sanji met expectations on most aspects, he showed the expected leadership skills, the most known of his character traits and was constantly involved in important events against the strongest villains of the arc, often saving people and giving the audience a glimpse of what he can do and how far he can go strengthwise in the future.
By far the letdown involving Sanji was post 1107, Oda made everyone think Luffy and Sanji would fight Kizaru onscreen, then what we get in 1108 feels completely different, almost like some stuff got offscreened, Kizaru just vanished for whatever reason, Saturn moved from his previous spot. A huge letdown from Oda here.
Franky exceeded the most expectations by far because most believed he would be sidelined but he one shotted a Vice Admiral and apparently used CoA for the first time, was constantly involved in battles against strong foes. Things looking promissing for Franky.
(although some people pointed out he would get more focus this arc cuz of science stuff and he did, which is good)
Luffy was ok but i don't think he exceeded expectations, he obviously has the best perfomance strengthwise, as he should, but i would say he showed his limitations quite considerably in this arc, as a Younko, like when he was completely worned out like never before against Kizaru and at being constantly overwhelmed by some of the Gorosei and realizing he needs quite a lot of outside help against them (Hello Mars). Gear 5 is still annoying as hell, unreasonably goofy, tension killer who makes Luffy go from a cool looking idiot who sometimes looks super goofy into a complete clown.
Zoro didn't met all the expectations i guess, mainly due to the waste of time with Lucci, which was nonsense because so far we didn't got an explanation for that, and despite showing he can definitely beat up Lucci for good, not having him laying down on the ground at the end like Zoro always does feels odd for Zoro's standards. At least he got a cool clash with Nusjuro, as most people would expect since duh they are swordsmen.
Jinbe's role was getting bossed around by Nami then by Sanji while working as Zoro's taxi so idk. Definitely didn't met the expectations i guess, but i don't see that much of a problem here.
The rest didn't do nothing that much impressive to be mentioned, although Nami is always involved to help the M3 at leading and she also showed an impressive feat with Zeus, based on her own standards for overall strength, of course.