Ah yes. Calistus III. One of the most cruel emperors in history. He was known to decapitate men who stared at him for more than a second, and often amused himself by sending random people to the lions. And his destruction of farms led to the revolt of Scandia (1462 CE) which remains outside of our control to the present day. He wasn't able to screw up too much in Roman-accultured areas, and was a good organioer,which is probably why he reigned for 19 years. Terror was his main weapon.
Caesar Borgann III is possibly the most drunk -emperor in history.
After the violent death of his father Calsitus IV,by being run over by an elephany he kicked, the throne fell to this utter incompetent.
Besides his excessive consumption of drugs. His death from alcohol posoining at 26 was an indication of how much of a drunk he really was, adding to him being a major palyboy.
And Infans Romanus, as the name says was very young and reigned over seven months. Hr had been the nephew of the younger brother og Caesar Borgann III, who had been killed in a drunken rampage. The Revolution had already been under way at this time, and ended with the deposal of Infans Romanus after five months
I think that if the Scandians had been feeling a little more like raiding, and the conditions could easily change to tempt them, then total collapse would seem rather likely. But Lucius Brutus Scandius, whom had scored a victory agsinst them in southern scandia1545 CE was there to guard the frontier, and helped discourage them if they ever had any thoughts. Thankfully, scandius was a republican, and never tried to take over himself.
And a word must be said about Terra nova, which was discovered about 30 years after this. They were getting enough representation in the Senate
in the 17th century, so that they could have more power than any og the Europa senators. So tried to limit their representation, which led to conflict and the recognition of Terra Nova as an independent nation in the Treaty of Londinium (1763 CE) If anything had gone wrong, then some kind of collapse could have ensued. But, today, they are among are closest allies!