Thanks to Battlefield Friends this would be a very funny mechanic to introduce to the game, and that is have ammo boxes and medi-kits damage enemy players if you throw them directly at them and it hits. It shouldn't do a lot of damage but it would be a hilarious way to finish someone off. Imagine running out of ammo but you knocked an enemy to low health and thanks to this game having proximity chat. You can yell out, "POCKET SAND!" and it would kill the person. It would be hilarious and also give players another way to defend themselves.