I'd suggest removing the number that appears when dropping a house. It makes it conterintuitive. I'd assume the goal is to get the largest house because of those numbers, but it's not.
Only suggestion i'd make is a way to mass destroy buildings, like highlighting them and hitting a button instead of having to triple click each manually
Thanks for your suggestion! You can delete+Click on buildings to quickly destroy them; maybe I should mention that somewhere in-game...