In a Kingair with PT6 engines, 'dead leg, dead engine' may also lead to 'dead pilot'. There's a single point failure in the PT6 that causes an immediate torque runaway on the affected engine. Massive amount of power on the 'failed' engine causes the plane to yaw to the good engine. If all you use is 'dead leg, dead engine' before feathering, you will have have 'dead pilot' too.