I was thinking, I'm a turtler type of player and focus mostly to learn tech/magic and after I'm very high, begining the conquest if needed (normally, I ally). So I was thinking, after you've research the level 5 of the spell and have reasearch the spell of making along with all the other spell, your arcane study/monastry/tower of magi become useless. It's a pain to remove manually all those building. What about an option to replace or at least mass destroy some building in a city/kingdom? It would free up some space and make the city management more easy and fast. What are your thougth?