Very nice! I've always wanted to do a scenario of a surviving Eastern Roman Empire that fills the role of Russia IOTL and undergoes a far-left revolution of some sort. The Black-Anarchist armies of nomad Turks roaming the interior, the breakaway Republics of Armenia, Lazica, and Cilicia, a White-Imperial army of reactionary officers and soldiers rallying around the last heir to the Imperial Throne, a centralized autocratic Union of Roman Soviets centered on the Queen of Cities desperately trying to fight enemies on both sides of the Bosphorus and assert control, it's pretty compelling IMO.