Can we change how Mastery Rankings are calculated to better accommodate Support players?

Since I'll be stuck here for another week or so I might as well give useful feedback for once on something that's griped me for a while. Champion Mastery, or more specifically the Mastery Grade you get post game.

Now I have no idea what actually calculates this grade but it seems that the only thing that truly matters in regards to it are your Kill/Death Ratio. High Kills and Low Deaths more often than not results in A+'s into S- ranks at the very least.

But as a Support, you're not going to be getting a high kill count (Or at the least you probably shouldn't be). For example you could not die once, get 24 Assists and zero kills: "Oh boy I did well that match, I can't wait to see what Rank I got!" A+ "FUUUUUUUUUUUUUU-"

Heck if you die even once as Support you're pretty much t'd to NOT get an S-

So, what am I asking for? Well like I said as far as I can tell K/D seems to be the only contributing factor to your Mastery Grade (Or at the least the BIGGEST factor). It would make Support's so much happier to know that those 24 assists are actually worth something.

There's a whole load of different things that could be taken into account that likely isn't such as: -How many wards I've placed -How many wards I've destroyed -How much shielding/healing have I provided to ALLIES (specifically allies, not self shielding or healing otherwise Lulu could just self spam E) -How much CC I've inflicted. I realise this one is hard to properly calculate. _(How do we do it? Based on the number of CC's we applied? The duration of CC applied? Do we separate forms of CC for the purposes of the above calculations or just roll it into one?) _ Yeah that one might need some thinking about.

If these things are taken into account it would make Supports feel less like their efforts are so much pissing in the wind. Because so much emphasis is put on those that get all the kills and Supports are seldom appreciated for the sheer amount of shit they have to do (and deal with). Might also make Support more attractive as a role if their efforts are actually recognised. We could even add the above to the extra statistics in the post-game lobby alongside everything else. (I know healing currently is).

All of this would also make achieving Mastery Ranks 6 & 7 far more feasible for Supports as well given it's just been added. (As much as I don't like how it's done).

So...thoughts? :P