Grades in Match History

I think that a great way to improve future games with champions is to allow player to see the grade they got when looking at match history. This would allow you to look at builds as well as KDA and CS score and see what grade is produced from different combinations. It would also help those who often forget to check at the end-game screen. I just feel as if it would help players know what needs to be focused on in order to improve their game play. It could be made so that only the player who earned the grade can see it or public so that others can use what they see to help out in their own future games.