Less Ammo on Official Maps and also ammo rework?
I don't think the SMG should have 60 reserve ammo. Seems like a lot and I can just spam the entire enemy team and still have ammo to spare. It discourages from arresting and from using the pistols. Maybe decrease the magazine capacity? Nerfing this would also allow for another weapon to fill the gap left. Maybe theres ammo across the maps you can pick up.
Also an ammo rework where if you reload and drop the mag you lose the bullets in that magazine.