Icons: Of Mastery & Men

Alright, so this Champion Mastery thing in Season 6 has been given some more importance as of late, with the whole Hextech crafting junk, not to mention the ribbons and emotes in game it has always given you. But here's a suggestion I've had in order to make players go even more gaga for them.

Make it so that when the player gets Mastery 4/5 on a certain champion, they unlock the champion icon as a summoner icon. Such as; if I get say....Mastery 5 on Tristina, I unlock as a summoner icon I can use in-game and for my summoner profile. Even better, they could have banners when the Mastery 6/7 thing eventually gets integrated into the game. Just because these banner things have really been wasted for the longest time, having them exclusively for ultimate skins and only if you have the Ultimate skin's icon.