The roads do naturally heal up. But travel to a region ravaged by looting, destruction, abominations, etc can be a real pain in the rear. Can't we get an option, something available only to the region lord, to speed up the repair process by paying some gold (speed 1.5x) and lots of gold (speed 2x)? Its perfectly reasonable, you pay more gold, get more labourers from neighbouring regions, buy more raw materials. Ideas?