ATM I'm playing a campaign with the TT Mod: Byzantine 493 - 550 AD vs. Sassanid Persians 477 - 590 AD. All battle maps are of the Mediterranean map type. That would fit the theatres of war like Asia Minor or costal parts of Syria but not Armenia and Mesopotamia etc.
It would surely be much more immersive to have a choice of map types.
Also the possible choices for allies is quite limited even with the "Date" and "Geographical" settings turned off. For the Byzantine 493 - 550 AD there are only Arabs (Bedouin). (Vitalian, the rebellious magister militum per Thracias allegedly had Bulgarians and Huns in his army with which he threatened Constantinople till his defeat in 515.) Would be nice if we could get a bit more freedom of choice here.
Hey, and no Isaurians, anywhere?




