I'm sure most mayors have gone through a problem where they don't know who placed a block, but they don't want to pick it up to find out who placed it.
So my suggestion is for a new type of cursor called "Detect Block"
It would be activated by pressing [Y] or something and it would just be a clicker that would tell who a block belongs to. it doesn't actually pick up or place anything. It would be a tool for mayors mostly.
Leave your suggestions and feedback!