Permanent Grade System w/ Champ Mastery?

Hello, Here's what I would like to see happen at some point. If it is possible.

I'd like to see the grading system they show at the end of a match to stay on my profile permanently.

Here's why.

1.) It's awesome when you receive a good grade from a match. 2.) It would be especially nice to have them average together to really assess my ability w/ the champs I play. 3.) If my overall grade is poor it could give me motivation to learn a certain champion to improve my grade.

Here are a couple reasons why it wouldn't work so well?

1.) Screw the meta? Sometimes I like to have fun with league and just play champions that I really enjoy and have fun with, even if I lose. It wouldn't be fair to grade my smite/teleport Teemo counter jungle to a "standard" jungle.

2.) I wouldn't want third party websites to collect that much data on the champs I play. Last thing I want is some dude whining because I have a C with the champ I just picked and he has an A; because he looked me up on lolnexus.

Overall I think it would be nice to have it implemented into the game i think overall it could help with people learning new champs or for others to show off that S+