Great update.
What's the current situation in corsica and sardinia? Corsica in particular would be very geographicly important to protect the empires heartland and would be a excellent naval base if future emperors rebuild the navy. Has there been any gothic settlements there?
Edit: Sardinia...
Speaking of Africa, since non pinnacle Europeans will have less options for emigration will this mean more go to north Africa? In otl they were a sizeable minority they could easily become a majority. Could there be an Irish comunity there?
What was the death toll of the American troubles in total and by race? And did armed insurrection by blacks in the south lead to an increase of police brutality, especially shootings, nationwide?
But then why specify that the troops are mostly Arabs? They had to move them from Libya even though it's still an active front. And if was just a standard amphibious attack in Yemen Italian regulars would be better trained for that.