Right now, both the soviet Heavy mortar and the Ostheer LeIG consume 6 pop each, once their crew die, you can recrew them lowering their pop to a half using this exploit, since the pop cost come from the crew (2 each) and not from the gun, to fix this I suggest adding population to the gun instead (like the Nebelwerfer), I guess that this is possible for the LeIg (looks "similar" to the Nebelwerfer), but would it be doable for the Heavy mortar?