A dark ages game seems unlikely to me. Depending on the concept and implementation, it could end up looking and feeling a lot like CK2.
I'm sure trying to fix up the Empire or playing the Visigoths would be fun though. The vikings were a big part of that era, and we get to do that kind of stuff with the CK2 old gods expansion.
I think there must be something to the way he typed Seven and Three, in addition to the actual numbers.
Not a bible buff, but also:
"
1There was a man in the land of Uz whose name was Job; and that man was blameless, upright, fearing God and turning away from evil.
2Seven sons and three daughters were born to him.
3His possessions also were 7,000 sheep, 3,000 camels, 500 yoke of oxen, 500 female donkeys, and very many servants; and that man was the greatest of all the men of the east.…"
Paradox presents: "Heavenly Procreation: The Game"