New Champion Mastery Idea

Wouldn't it be cool if every time you get your champion to mastery level 5, you get summoner icon based on the champion you maxed out? Think about it, the custom emote and champion mastery badge reward isn't exactly worth the time you put into your champion once you get them to level 5. A cool reward would be to have a custom emote made specifically for the champion you mastered! It shouldn't be your badge popping out of your character, dances for a little bit then disappears. A summoner icon and an ACTUAL custom emote would be a pretty cool reward.