Byzantine Themata system possible?

[JohanLerstrom]

Byzantium gets a special law giving them access to the Viceroys early ( everyone else needs fairly high tech ) and giving them a slightly easier time managing their vassals.
Byzantine King level Viceroys are called Exarchs and their title is refered to as an Exarchate
Byzantine Duke level Viceroys are called Strategos and their their title is refered to as a Theme

 

[JohanLerstrom]

One thing - aren't the Byzantine marshals in the game currently called Strategos? You'll have to change that to avoid confusion.

They are now called Protostrator