Champion Mastery

I like the new champion mastery and what not, but is there any way we can incorporate a system that tells you how to improve? Like why did I get a B+ rather than an A? Giving some one a grade but not explaining why is useless to the player. Oh I got a B+, so how do I do better? Do i need to die less? CS more? deal more damage? get more kills? Giving a small brief explanation on how to improve my B+ to an A would be much more helpful/useful than just telling me i got a B+.

Ex. You get a B+ The mastery system would tell you that your CS is low, and that improving your CS would have given you an A.

This gives us things to work on/improve on rather than just giving us a grade, and not knowing how to improve it.