If we’re including ones taken out of circulation but not officially retired, I would bring #11 back. Maki’s passing was 50 years ago, and the majority of the fan base wouldn’t have been alive at the time.
Going by numbers officially retired, 19. I love Naslund; he was my childhood hero, but I don’t think he did enough to warrant his number being retired compared to the other 5. Sedins and Bure are both hall of famers, and Linden/Smyl became the heart beat of Vancouver. Naslund is the only one in that list as well to not have any measure of playoff success.