You can always change destructible model into unit model and set hp to 0
Or use trigger action to create corpse on map...
Just create a unit, play decay animation and set animation speed to 0%. Then create a trigger that checks when a unit is issued an order targeting an object. If unit-type of (Target unit of issued order) equal to (your fake corpse), then add it in a unit group that periodically checks the position of the ordered unit and the corpse's. If the distance is less than 140, then remove the corpse from the game and Hero - Create item for the ordered unit.
Ask their permission first
After you get, i make them right away
About the blizz, i can make it right away