They have tons of impersonators, like for Elvis. It keeps the originals remembered and the impersonators get a living. But think about it, if they can't make a movie with the originals they have to use impersonators, like in the movie Hitchcock. People impersonate Lincoln and they have a business with a group of people that look like someone famous that they use at grand openings or anything that they need a "celebrity" for. I went to the Hollywood Wax Museum once and they had impersonators for Dirty Harry and the Terminator. Was fun and no harm done until Harry called me "punk".
Elvis impersonators come to my mind first. Few of them have the sex appeal of the original though. But I guess they could be representations of his later years I never really cared for them myself, there are few things from the past I care enough about to want to see revived, maybe when I'm older Even then, I've never been one to be so obsessed with a celebrity or TV show that I'd care to see in impersonated unless it was intentionally some sort of comical parody.