Champion shards when every champion is owned.

Can someone tell me the point of earning champion shards from hextech chest when someone's got every champion in the game? I got kinda angry when i opened 4 chest and earned 3 champion shards which cost me 500 rp and got some trash which i cant't even use or replace. So my suggestion are : 1) remove the possibility to gain champion shards when someone got every champion 2) mix the essence gaining from disenchant so there's not 2 types of essence 3) make disenchanting a champion gives yellow essence when someone got full set of champions 4) make re-roll a champion gives skin permament instead of champion permament when someone got full set of champions P.S. Excuse me if the post is in the wrong board but I couldn't decide when to put it.
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