There needs to be away in which your own skills are taken into account.
Look, I get it, it's a team game. But unless you are a god, you will eventually hit your "elo hell".
Your own skills will only get you so far, but there will be a point where you will get both feeders and feed teammates so regualry that it becomes impossible to climb any higher.
I dont really see why a 1/8 Vayne with 100 cs gets the same treatment as say a 9/9 irelia with 200 cs.
Things such as kill streaks, KDA and CS should be taken into acc when addressing your own LP.
If the game it's 7/30, but 6 of those 7 kills are yours, then there is something you are doing right that your teammates arent.
There should be a threshole how ever, but there's gotta be away where bad players/trolls stop having so much power over your own ranking.
It's "SoloQ", why am I beeing graded according to how good my teammates are when I got no control over them?