There is a brick wall coming, and that's when the older players start dumping everything so they can move to Florida and wait for death.
My editor is 25 and actively looking for his first pin. (BK2K Madison WI area if anyone has a lead) So there is hope for these young people to get involved. But we need more "non-ancient" themes to get them interested.
Need to find a bridge... something millennials love as well as older folks (maybe The 80's, see TnA) Young people would snatch up Power Rangers or Pokemon in a heartbeat but those pins would never get made because 50 year old men wouldn't buy them NIB in the first place. Jurassic World would have a been a great title (30-somethings WORSHIP the original) wonder why nobody made that one?