Still, I think that pillaging and sacking would be an interesting mechanic to consider in every stage of the game, not only on early moments just to get a quick advantage over a neighboring rival. I feel that it would add a profound layer of tactical decision-making: should I send my strong army directly to the province's capital for a siege, or should I start a slower but less men-costly attrition war? Or deprive my rival of a precious resource, such as horses or iron?
I always felt this like a huge drawback in the first game, especially when taking into account how well-rounded the economy system is (deep but accessible at the same time).