Luffy, Zoro, and Sanji are good. Brook's outfit is fine underneath the crown and boa (maybe remove one or the other or both). Robin and Chopper are whatever. Nami and Usopp are bad (though Nami's gets better if she puts her hair up in a ponytail like in Punk Hazard). Franky's design has problems that go much deeper and are more insolvable than his outfit, which is just his OG Water 7 duds anyway.
I seriously think Oda regrets Franky's redesign because now he has what is by far the most complicated one of the nine (and if you want to include him Jimbei's design is actually pretty simple comparatively with all the detail being in his face) and he's been frequently taking shortcuts by covering up his shoulders and all the other added detail with inked-in shirts and jackets and stuff.