Hextech Crafting - Trading collectibles should be allowed?

THis will be a huge addition to the game going forward i am really excited for it, but i have some questions.

Right now for example if you have 3 skin shards you can combine them into a random skin. That's fine

But what if we could get more OF THE SAEm skin shard? Could it mean that if we have example: 3 Battlecast Vel'Koz skin shards, and we combine them, we get Battlecast Vel'Koz?

Then if the first is true Another question comes to mind: Shards trading should be allowed? In that case it would really become like a card game, whereyou swap with other players cards and stuff to get what you need.

But then it would probably ruin the income of this game since no one would ever buy skins again :P Would be cool tho