Make use of the mastery rating system in ranked please

I know you guys at Riot love to think you've created this awesome team game with all these outrageous restrictions that somehow lead to "better game play," but that clearly isn't the case. You can't force people to work together on your team, especially in ranked since everyone has an "i'm better then you, so trying to 1v4 the enemy team is a good idea." I can't count how many ranked matches one person gets caught out, thus making it a 4v5 for the next 30 seconds, then the 3 other people on my team are like, "lets go ham on these 5 and then bitch out this other guy who realizes we're temporarily outnumbered and knows its not a play worth committing on." Then meh meh meh, a bunch of verbal abuse, meh meh meh, more bad plays finally game over, and I've managed to still get an S rating for the round even though we lost it. Well my thought on this matter is USE THE MASTERY SYSTEM FOR SOMETHING PLEASE! Other then flashing your mastery in game, there literally seems to be no point in the creation of that system. I could honestly get over people playing poorly like i described if they weighted your LP loss on how well you played. Like sure if you lose, you still lose some LP, but if u get an A or an S maybe don't take away 20 LP still. Like if you do terrible (we all have a bad game now and then) take all of it, but if you get an S or an A maybe take only 5 or 9 LP respectively. I don't understand how Riot thinks that a single person is capable of defeating an entire enemy team solo (which is implied by the whole "your team fed, you lose, no matter how well you played" system). I rarely even get the position i want in ranked and some how find myself playing it better, and out farming all my teammates (if I don't end up support, which again, HOW CAN YOU CARRY THE ENTIRE GAME FROM SUPPORT WHEN U ARE GETTING LESS GOLD AND YOUR TEAM IS FEEDING?!). Not that you ever listen to these things riot, but just a thought for you big boys upstairs. Who am i kidding big boys, lol, little baby boys. You know you're playing with little boys when "verbal abuse" is a reportable offense while muting people is an option. GG WP!