LVL 7 Rewards Ideas

Why arent there special icons or emotes for champs that youve hit mastery lvl 7 with? i know youve got the mastery emote but i feel like there should be an icon or something that makes it that much more special, because there are those who play one champ but there arent any icons or anything to show their mastery in their main champion. im speaking specifically from the standpoint of a shaco main, there are no real icons that say i main shaco but if i main ziggs or yas there are tons. or if there was a champ specific emote thats more playful than just mastery 7, food for thought.