Heh, me too! I have to believe that someday they'll be able to completely digitally model entire episodes and be able to insert/remove characters at will. So long after the actors have passed on, they'll be recreated in new episodes as if they're still active at the same age they once were. Writers will craft new screenplays and the "directors" will use advanced software to create the video with actor models following all of the scripted action and emotion, as if done by the real actors. We may even see this in our lifetimes.
Have you ever seen the film 'Dead Men Don't Wear Plaid'? I think you'd really enjoy it.