It's beyond creepy. Who owns the likenesses of these actors - studios, their families? Is there a limit to what greed will do - maybe there's a relative of a dead actress or actor who doesn't give a shit and will approve their CGI porn double? Or, something less sinister if that seems far fetched - maybe an actor didn't want to appear in a certain type of movie or reprise a character, and years after their death, their grandchildren can say "fuck it, we need the money" and approve of it anyway. Today's actors will protect themselves because they know about this, but actors who died many years ago can't. Also, having a world where the hard working actors of today have to compete with dead legends of the screen seems unfair.