Rome was powerful throughout history, so much so that one point in time simply doesn't do the civilization justice, which led to the choice of the Republican Manipular army during the Second Punic War alongside Carthage, due to the focus on 500 B.C. to 1 B.C. in Part 1 Empires Ascendant. Hence the long term plan to also include a few other Roman civilizations in order to do Rome justice: the Early Empire (Marian Reforms), Late Empire (Trajan), and Byzantines in Part 2 Empires Besieged focused on 1 A.D. to 500 A.D., which is planned to also include other civilizations at their prime during the period and campaigns.