I was actually thinking the same thing last night, it's a shame that there is no religion, it would add so much more depth into the game. Imagine the Christianity equivalent doing crusades, or Jihads for Islamic equivalents. Having to convert regions after annexing them, otherwise you'd get rebellious subjects for having the wrong religion. Or even having a moreso humanist approach where you accept Kingdom policies that more 'humanist' and allow more than one state religion. **** Im getting keen thinking about it.