1) storchs don't carry HE or forward firing guns, so entirely different from an il-2.
2) the storch is a light utility aircraft, and this is the type of thing they could do, and did, during the war.
3) use a different system of spawning for the storch. Hell, give it an airspawn 6" off the ground, so it's essentially a non-variable ground spawn.
4) yes, we do want to remove some of the advantage of the defenders. The more that vehicles can do without waiting for distant support to arrive, the better. If we get artillery, and it's as effective as bombs at taking out hangers and ord, well that's fantastic!