The son of Augustus's right hand man, Posthumus Agrippa was born in 12 BC, the same year of Marcus Agrippa's death. He was the designated heir upon the death of Lucius and then Gaius Caesar. Tacitus describes him as, " the young, physically tough, indeed brutish, Agrippa Postumus. Though devoid of every good quality, he had been involved in no scandal "
For reasons that are obscure, Posthumus was exiled in 9 AD and then executed after Augustus's death. So my question to you kind folk, what could be the effects of Postumus succeeding Augustus instead of Tiberius?