Is ranked fine or is the system flawed?

Now hear me out before all the "if you are good enough you'll climb"... i know that!

But, isn't a system that is designed to tip the scales in one direction or the other slightly flawed?? Like, is having a 50% winrate really a must, or should all games be 50\50 chance to win??!

IMO, i think ranked should work differently, sure lose LP when you lose games and win LP when you win. But should you really be losing a standard 17/18 every game even when the loss is unavoidable??!

What if the LP loss was based upon your game performance? Like how we now get S+, S etc etc... so if you have a really good game and lose, you lose something like 75% less LP. If you win with an S+, you gain 20% more LP.

Encourages people to try hard, will stop tilting and giving up so much. Just seems a fairer way of judging an individuals rank, rather than basing it on the performance of 4 other players..

I am only thinking out loud from soloQ experience and recently dropping from gold 1 promo's to nearly demoted to gold 4.

Kind regards

Jazzy