Tbh. I don't want this to happen ( because I don't want her on the crew if she stays with this fucktard Oden shit ) but it's possible that she will join SH's and immediately transform into sex influencer due to Nami's behaviours and she will be used by Oda to sell figurines because who wouldn't buy cute Nami with horns figurine.
But yes, she definitively has to get her own personnality, and if she isn't stronger than Zoro then her presence in the crew is useless. I was thinking about the parallel with Oden who joined Roger's crew and wasn't weaker than prime raylegh imho or very close.