I know this is going to sound crazy, but hear me out. I have always thought we would see at least those crashed REPCONN rockets in the next fallout game. It would act as a link between the games, like ED-E was from the CW, from the prior fallout game(his history anyway). If you watch the FO4 trailer, the baby's room is decorated in rockets and you have the baby's mobile rockets that look exactly like the rockets found at REPCONN. The PC's baby doesn't die, he is the reason the Bright Followers are taking their "Great Journey" to a place of "healing." and safety. I remember hearing of a place in FO4 that is very radiated that no one goes and is the source of the radiation storms we will see in the game. This is where the Bright Followers are heading. You heard it here first folks.