Wasted resources
I don't know if this happens to anyone else, but it does happen to me. When you build a building for example, and then you chose to destroy the building, and serfs still holding items for that building looses the item, same if a serf doesn't make it to a Troop in time, they lose the item. Why not just the serfs bring it back to a storehouse, or another building in need like their default setting?