Why is it that ritual costs are not relative to the number of provinces or average nw or something like that?
A 25-prov KD has the same cost (mana and runes) as a 3-prov KD, since you just pick the smallest prov to cast all 80 times. Why not lower the cost per cast for smaller kingdoms. This way, the amount of mana spent is still the same and the rune cost is proportional.