New Profile Banners Please

I was looking at my profile, and I noticed something... now that the new level 6 and 7 mastery badges are up, I had an idea that when you get level 7 with a champion, you can have that champion's splash art (only the default one i guess) as your profile's banner. Would be a good add to the profile instead of a "summoner" which is there for a long time. What do you guys think about?