I haven't really watched a lot of different anime, but I really don't like Nami. I have a bad time liking female characters in anime or video games (see: any freaking female main from final fantasy) But the reason I don't like nami is because she's inconsistent. When you need a pair of boobs, she's there. Sometimes she's smart, but most of the time it's just GIVEMEMONEY/IHAVEBOOBS/EVERYONETHINKSI'MHOT. And I just saw the preview for the new one piece movie, and she gets kidnapped. This is what, the third time?
And she has a funny waist. One of these days she's gonna overbalance and snap in half. But I'm pretty sure that's just the artstyle. Still, it's annoying.