I love the fan club idea! I still don't have any, maybe because I haven't had a celebrity that would be dear enough for me to create them a fan club.
I mean, I do have Dominic Fyres who is a global superstar, but he is more like a quiet type of celebrity and doesn't meet his fans often. I also have Sofia Moon (Bjergsen) and Octavia Moon, but I don't play them that much anymore. My dear Faye Goth might like to have a fan club, but she is still quite young a celebrity though already a proper celebrity, I think. I'll have to see if I could create her a fan club.
What would I do to a fan club when the celebrity passes? I think it depends on the celebrity, but I think it would be lovely if the fans would still gather together every now and then.