Specific rewards for reaching Level 7 with a certain champion?

So, reaching level 7 on your main is good and all, because you can flaunt your level 7 emote, but you can do that with any champion you want, and so can the enemy team. If you're a proud level 7 then some level 7 comes in and ruins your day by doing that same emote and murders you, then all you're going to do is be salty.

We need specific rewards for specific champions, maybe a little emote of the champion holding the level 7 thing, but that's just a concept, Riot can take it from there.