achievement ward skins or summoner icons

So i was thinking maybe it would be possible to get a new ward skin or summoner icon if you've achieved "x" amount of something. So like for example maybe have a cool ward skin if you get like over 1000 assists. and then another one once you hit like 10000. This could be a sign of experience and encourage players to play more roles

I know theres already the 5/6 icons for team builder but if it could be like that with a more continuous process i guess?