This is exactly the same idea I had the other day.Empire era would require another game to be represented correctly. A game that concentrates only upon internal Roman power struggles and in which you would play an ambitious noble family with sights of being Emperor instead of the Emperor.
But that would be after the end of the first roman empireMarcus Aurelius.
But THAT would be great... A game starting 395 AD!
While Alexander was busy showboating around Asia there were all sorts of interesting things going on in Italy.
Like Rome defeating the other italian states and becoming the only italian country