I believe trading would be a great idea for destiny. Loot is based luck and just the drop chances. But with trading there will be more to do on the resets and there will be a larger fan base towards the game. Their could be for example dealers, say like someone stacks up on a certain gun like the vex and then sell it off for more strange coins or a better exotic. Or if your struggling to get an exotic you can trade your friend for something they don't have.