Players that die too frequently in ranked should fall in MMR
Win or lose, if you die more than once every 3-4min, you're a dead weight and deserve to lose. It's actually so frustrating trying to climb when someone is just going 0 13 at 30min just running around with no vision and dying. I can't begin to fathom how bad your comprehension of the game must be for you to relentlessly feed so much. If you feed like this more often than not in Silver, you absolutely deserve to be in Bronze/Iron, and the fact that a smurf carries you sometimes shouldn't change that
If someone is a heavy net loss for their team they should fall in MMR, regardless if they win or not
Edit: I came to this conclusion while I played on my alt account