Solo performance in SoloQ idea / suggestion

• First of all, this is my first time ever making any kind of idea how to improve league of legends gameplay, I was thinking that it would create a lot more positive reaction in high(ish) elo than negative, but of course I haven't think this for hours etc. so it might include some bad things aswell.
• I've been high / mid diamond player since end of season 4 to season 5 now. So this is obviously from that elo point of view.
• I have also no idea if this type of idea has been up before.

Anyway, I came up with an idea of solo performance making a direct difference on the LP gain / loss. By that I mean like KDA, dmg dealt, taken, gold, cs, lenght of the game, etc. would make a small difference on how much you'd lose or gain after each defeat or victory. For example:

• you had really good game but you still lost & the game was 45~min. long, you'd lose 30% less lp
• you had really good game but you still lost, you'd lose 20% less lp
• you had decent game but you still lost, you'd lose 10% less lp
• mediocre, no effect
• extremely bad performance & the game was 15~min long, you'd lose 10-30% extra lp
• other way around on victories

Of yourse those are just rough numbers since I don't even have a clue if that's possible to do in league system. Also I didn't think the possible cons of it aswell as possible cheating / difference between roles & playstyles. (maybe people would be more afraid to make plays and try save their kda's etc. more ?)

The pros that I think would have some effect on diamond elo would be for example:

• People wouldn't troll & give up as much just because of their "high elo ego" since they'd lose more lp

• overall "open mid" , "surrender pls", "i give up", "fuck this game", "lets go next", (which happens pretty much every second game if you are behind, not even getting stomped) might go down since there would be additional reason to drag the game longer and actually try your best each game, since the fear of likely defeat might not be so high.

• overall toxicity might go down at least a bit since you wouldn't have as much reason to cry / complain / spam the chat about how bad your team is.

Well, that's the rough idea what I came up with.. didn't think much of the bad side of it, nor from a lower elo point of view nor from challenger elo point of view, but anyway would love to see if anyone thinks it would positively affect the soloq experience or if it's worthfull idea.