Hextech the next generation.
Ok, to immediately get it out of the way, I don't care if you rerolled a champion from free chests or your bought ones, this has no relevance to the actual issue with it.
This will probably be ignored and Riot probably hopes it to be forgotten, but you really need to have some kind of end game for the champion shards when they're not usable anymore. Plenty of people have made suggestions but I really just want to know. Is there anything going to planned with this. I can point out how detrimental it is that you're currently fine taking someones money while offering them nothing and how your lack of foresight has caused this problem, but you already did it, so you're probably completely aware.
As a reminder, please don't bother saying things like, "But you can get the next champion free." or "I got these rockin skins bro!". Even if I got shit skins all year round, they have a purpose, even if its to be dusted. Riot isn't going to release a champion every week so the absurd amount of champion shards is just dumb. Just make them have a purpose.