Earning or losing LP based on performance

Not sure if anybody else has wrote something about this, but just an idea I had. Now don't get me wrong, I love play LoL. It's hands down my favorite role playing game and it's an enjoyable game to play. One thing that bothers me though is that people earn and lose LP the same as their teammates when sometimes they don't deserve it. I've been in bronze ever since my placements and I'll admit I deserved it. As of recently though I have been playing so much better and smarter, and have had opponents tell me I shouldn't be in bronze, or that I'm playing at a better level than what most bronze players play at. I know people say that if you're in bronze, it's because of yourself. As of recently though, I'm not as big of a fan of that idea as I was. It frustrates me when I'm performing very well and setting my self up for a victory and winning my lane, but the other lanes feed or my jungle feeds. Even people who troll and intentionally feed just so you lose, get the same punishment as you. It's frustrating when I can go say 4-0 in lane, then start roaming and get up to 7-0 or 8-0, but my team is still constantly dying to the point where I get focused and die instantly and then no body else can do anything and we lose the game. It seems unfair that I lose the same amount of LP as they do, for performing significantly better than them. Or if the other team isn't as good as me and I can successfully carry, it's unfair that, me being the reason we won, my teammates get the same amount of LP as I do for not doing a whole lot. I think if players were to earn or lose LP based on their performance, it can make the game so much more stress free, and bring back the competitiveness of people in solo que wanting to be the best players. So say you win, to keep it balanced everybody gets 10 LP, then you get bonus lets say up to a max of 15-20 LP depending on how well you played. If you lose, you also lose 10 LP, but if you do well enough in your loss, you could have a chance to cancel it out with your performance bonus for those players who really played well enough, but had no help from the tea. Now I don't think LP should be taken away if you win and still did poorly, because you had to have done something right to help the team, and again keep it balanced and fair. I think it will cause players to have more motivation to play better knowing they can be rewarded for it. I doubt a whole lot of people will see this, but it's something that I think can improve the way LoL is played and make it even more competitive. I think it would even bring back a lot of players who quit or don't play it as often knowing they can be rewarded for their true play now. Sorry this is so long, but if you read the whole thing and agreed, I appreciate it! Just an idea, but I think an idea seriously worth considering.