Hextech chests with honor/mastery

So, basically i am a supp main and i am running out of champs to get chests with before i have to play other roles. I was thinking that perhaps riot could implement something so if u are high honor (4 or 5) with a mastery 7 champion u can get additional chests with those champions. I haven't thought this through at all, but i like the idea of being able to reset your top champs.

The only problem with this that i know of is that people wouldn't bother to play other champions b/c they only need their mains, but i think it would be cool to look into, even if it is one extra chest and has a really long cd.

let me know what u think.