I think it's cool, it's cute while also somehow being very serious. Like I would imagine a
Nanette to be a very stern person for some reason, very deadpan, dry sarcastic humour. Maybe because of that
Hannah Gadsby special that was called
Nanette, I've got that association.
I don't think nicknames are unavoidable. I say
Nanette closer to "
Ninette" so
Nancy and
Nan would be harder to use naturally, so would
Nettie. I'd just say
Nanette.