Changes to Gamplay Rating system

I like the fact Riot try's to help us improve by giving us a game ranking at end of game. Seeing an S is rewarding when you know you played good, seeing a C- or worse when you play bad, lets you maybe see (if you want to look at your own play) as to where you can improve. I think there needs to be some changes to this system though:

1. It should be made impossible to get an S rank for a game that you lose. I can feel the incoming flame, but how can you have a great game if your team loses. Yes you may have a great kda, and great cs, but if you did nothing to help your team win with theses stats, how can you have a "S" game. The ultimate goal should be to blow up enemy Nexus not get a good rank. I don't care if your 30/0/30 with 300 cs, if enemy team blows up your nexus it was not an S game.

2. Less priority on CS for Rank. I have had many games where I have been 8/0/10 and we won in 20min but got an A because my CS was low. Yes it was low, we were pushing lanes, dragon, rift herald, Baron (if more then 20 min), and winning the game. We did not try to get to full build, we did not try to waite till 18 to push, we WON the game, made enemy Nexus go Boom. That is a perfect game but if you had 80 CS because you rolled your lane, got fed, and won the game, you deserve an A ???

3. Make objectives worth more for score. I will take the 2/2/2 Top lane that takes 5 towers, an inhib, and we win game over the 20/5/7 person with 200 cs that does nothing but run kill to kill or farms jg and we lose any time. Objectives to win the game (I know cs and kills can be an objective, but if you don't use them then they are useless) should be more important. Towers, Inhibs, are direct win conditions, where CS and Kills are not. If you never take towers or Inhibs, you can never win a game because you can't make enemy nexus go Boom and that my friends is only way to win the game.

There is a common theme here, Your score should be based on a win or a loss also. This happens in any sport. If you throw a no hitter in baseball, have 500 yards passing in Football, 50pts in a basketball game, yep it's nice, yep you did will, but not perfect if you didn't get the win. The WIN in a team sport or event (like league) should be a factor in the game as well.