No point in even playing ranked with this LP system.
It feels almost hopeless to play ranked. I have a positive KDA on every champ I play in ranked and focus objectives, not kills, as shown on my lolking. Despite this, I still lose roughly half my games. Why? because even though I'm 4/4, my bot lane is 0/8, my jungler is 3/15. This has happened to me 3 games in a row now. So what's the point of playing a RANKED game where I want to show MY SKILL when I'm actually being graded on 4 other peoples skills.
An individuals skill only counts for 20% of your games outcome, and therefore 20% of your LP. Any monkey could design an algorithm to make it closer to 50% based on stats, but no, riot is too busy breaking their balance and pumping out new champs to focus on the BROKEN ranked system that everyone's hated since it rolled out.