Being able to pick what mastery 7 champ you want to show on your profile?

I think this would be a small but cool addition to the new client! I have many mastery 7 champs that I enjoy playing but nobody gets to see any of the other ones i have except the 3 that show when you view my profile. Idk if riot would want to implement this but I think its a little tweak that can be done. Lemme know your feedback on this idea!!