I'd just like to clarify that as has been mentioned scorched earth is already in the game, but unlike what I'm seeing is being implied, it is FAR more than enough. Scorched earth is currently very effective in a war in EU3 and quickly burns the enemies manpower pool. The defender in a war already has quite a few advantages, scorched earth being one of the best. There is no reason to further buff this.
If, however, you are asking that when scorched earth be used the buildings in the province be destroyed (or something along those lines), maybe? I'm not sure if that would be an appropriate balance to how effective using it is in a defensive war, but there definitely should be SOMETHING to balance its use, aside for a temporary income loss.
If, however, you are asking that when scorched earth be used the buildings in the province be destroyed (or something along those lines), maybe? I'm not sure if that would be an appropriate balance to how effective using it is in a defensive war, but there definitely should be SOMETHING to balance its use, aside for a temporary income loss.