An interesting topic I thought would be fun to discuss. There are shows that made it to broadcast, but did not follow intact into its first season. Roles that did not make it, actors that did not make it and roles were re-cast, or actors who played one role, then were re-cast to play another role, and so on. I'll start it off by citing one of the more well-known series, Star Trek. Its first pilot with Jeffrey Hunter did not get accepted, but a second pilot starring William Shatner was accepted. In the interim, only Leonard Nimoy would make it into the 2nd pilot still as Mr. Spock, while Majel Barrett, not in the 2nd pilot would eventually be re-cast in the series. Then the 2nd pilot, one actor, Paul Fix playing Dr. Piper would not make it to the series, being replaced by DeForest Kelly as Dr. McCoy. George Takei would be stay as Mr. Sulu, but his role would change from Physicist to Helmsman and Mr. Scott played by James Doohan would retain his same role.