Slitherine

So any thought to add other timelines ?

Like early middle ages I like to play the crusader states , Sassanid empire ,. Byzantium or Mongol Horde . Or the Viking age or Attila reign by example.

I would expect that they would simply follow on for the next 500 years. You would see Huns (under Attila), the decay of the Roman empire, the Byzantine and Sasanian empires, and more. It was a very tumultuous and very interesting period.