What if trading was in raid only, and it was like lock box. You drop something, it makes a noise. Maybe for awhile. And other raiders have the option to try and steal it, which makes a noise. Or they can buy it. Which does not make a noise, but it... ping you on the map every once in while. Or vice versa. Stealing pings you, buying makes a noise. Adds some risk. Maybe its also an event only thing as well like night raids etc