Serious question:
What do you think should be the winrate to proceed in ranking?

Before someone says: "Duh.. if you deserve to rank up you'll do eventually.. duh".. i know and i can relate somehow.. but still.. I am not familiar with pvp in other games.. so.. your opinion?

I'll be totally honest and of course i am doing this post to vent "a bit" but still really wanna know about it:
Did 22 matches straight in diamond and i won half of them so eleven. Where am i? exactly where i started cause "this time" i did not have a streak.
I am not overly complainig cause i got a really lucky one in plat and i know if i continue to play i'll eventually finally get to cristal.. but i still wonder if something should be changed in how people get those bonus stars. I can't help but be a bit discouraged, what will happen if i continue to alternate wins and losses? is 50% in diamond still a win rate so low to not deserve to advance?