It seems that Emperor Maurice had plans to divide the Empire between his sons. The most common consensus about this scheme is that it would be a return to the division of the East and West rather than a new tetrarchic system where it would be split among all his sons. Supposing that Emperor Maurice wasn't overthrown and makes one of them Western Roman Emperor how viable would such a state be? How would/should the new Emperor deal with the Pope, the Franks, the Exarch of Africa, Lombards, and the remaining vestiges of Hispania? How would relations work between East and West?