Also StuG-III's had the machine gun in roof. Now it has nothing for close defence. Actually the original German MG-34 machine gun was replaced with Soviet 7.62mm DT machine gun, which was in Finnish opinion more reliable.
Also armor skirts were removed (that is correctly modeled), but logs were added in side upper superstructure in every StuG. I remember that it was intended to be modeled, but maybe CD-got too small to implement all in current relese? (Like IS-3, StuG-IV, BT-42, whose modeling is missing)
Also Finns bought ~30 StuG-III late (with saukopfmantle). They arrived in time, but they never see the action against russians. (Neither did Pz-IV)
But machine gun is nro 1 needed in StuG's. Then hopefully logs someday.