I'm taking a guess but anything relating to spartans is not going to be in this mod (besides the ones alreayd there). Sparta was not as powerful as it was before the game starts, the city had its population lowered because of war and they were no longer pure spartans but mixed with other people and races I think(still greek though). And roman catraprachts is more towards the fall of the roman empire I think, not in 200 b.c.