Custom Icons For PentaKills

I was thinking maybe Riot could give us a custom icon if we got a pentakill with champs in Ranked. So for example if you get a Penta with Kog, you get a custom summoner icon displaying the champ and maybe a symbol showing you got a penta with that champ. I just thought this could be a cool idea or incentive as opposed to some silly looking icons of trees or minions. Just a thought, would be especially nice gesture by riot since their outright lie about placement matches.