So, three eyed girl being Pudding, and Sanji's future wife (who Luffy was fine with letting onto the crew), I'm sure she's just rocketed a mile in plausibility.
Weird that Oda would reveal the third eye years in advance rather than as a surprise to Sanji later though. I guess it's letting the audience in on the joke ahead of time.
–- Update From New Post Merge ---
@maxterdexter:
Nami is identical to pudding. Just like Rebeca. And shirahoshi.
At the moment, because her hair is gussied up to hide the third eye. But her lips are different, and generalyl does pigtails… and she has a third eye. If her first appearance is any indication. ANd if the anime is anything to go by, brown hair.
Still a bit too standard and not as different as Robin is or Perona was, but she's not nearly as identical as Shirahoshi or Rebecca were.
Still not designed quite enough that it feels like Oda has put months or years of thought into it though. More like "three eyed pretty girl that Sanji has to marry" and not much beyond that. It's the same kind of generic-ness that floats around the others.
Main argument is that she WAS shown off years in advance.