How to make the loot system even better!

It is already nice that we can get occasionally skins or champions, but what if we could trade skin/champion shards with another player. This might sound op, but why not put a limit on it. It would be really cool if we could trade a champion shard we don't want for a one we need for mastery or to get a new champ. I have an Arcade Riven skin, and I never play riven, so I would gladly trade it for an olaf skin!