Don't be surprised if she is from Amazon Lily as well at this point.
All the Strawhats have some special origin.
Why not Nami and Chopper.
Yeah people have pointed out similarities to Nami and Shakky so far. It has to be somewhat intentional by Oda for whatever reasons. All the SHs will have important origins definitely as you said, its guaranteed.
Oda slapped Brook haters in the face hard recently, its only gonna get worse for everyone who downplays the SHs importance to the story and calls any of them "irrelevant/filler/pointless" etc. (As in saying it sincerely and not just to slander too especially.)

I've always felt Nami would have strong connections to Big Mom or Elbaph or even both potentially but Oda wanting her to have Enel's fruit and turning her into a lightning spammer with Zeus and Enel finding the "real Birka" on the moon really opens my eyes too....I thought Nami would be from the moon even before that Enel cover story funnily enough, the "Princess Kaguya of One Piece". She was found in "Oykot Kingdom" which is Tokyo backwards, maybe that place is where some of the people who fled Wano went before? Idk.
Nami is one of the biggest enigmas of OP and Oda is gonna go all out on her past, her heritage and such when he wants to. I wouldn't be surprised if she was connected to Imu somehow too. Despite what anyone says, the "Nami face syndrome" might lead to something plot relevant and thus why so many princesses resemble Nami immensely too.
Fuck man, almost 30 years into OP and there's still so much to learn about most of the SHs, including the full names of some of them yet.
Chopper having a blue nose is weird, I had something much longer written out involving Doc Q, Hiriluk, Blackbeard, Drum Island and how it fits in with how important drums are in One Piece and "the real life Joyboy story", Kureha, Will of D etc but Ican't be bothered to retype it all out now, as I lost it accidentally lol.

There's also Nami's name meaning wave, her unexplained affinity for weather prediction, her major cartography talents and we have Imu whose name revesed to Umi means ocean too. Imu used a map and a weather based to destroy Lulusia too lmao. Imu has Uranus and is Nami's mother/father?! /s.

