Because everything is similarly bland and playing in India feels the same as France. Would've been better to get basics right (like Holy Wars and Crusades which still do not work properly), then unlock other regions with all their mechanics through expansions. It would be easier to develop too since they'd be able to focus on something and decide where they want to go with it and how they want it to work, not worry so much about shoehorning the thing into the placeholder frankensystems they've created for themselves.