QOL improvement idea for DE

Making certain things in the game take two consecutive delete commands in order to actually delete them.

Tower, Castle, TC, King, and Hero (Joan of Arc) would require you to hit the delete button twice in a row in order to delete them.

As a side bonus, if this were the case, you could spam idle villager hotkey + delete hotkey and blow up any idle vills that were not inside a building and not have to worry about deleting a castle or tc! [as long as you make sure to alternate between idle villager and delete hotkeys ;) ]