Now I see your idea.

A few questions about it though;

Now that I understand how the actual ratio is calculated, would it be a single section like how it is, or would it be divided into day/week/total?

If a player with a high ratio loses to a player with a low ration, would they lose the same points as if a player with a low ratio lost to the same person?
Ex: You lost to a 1-2 person and x points are taken off your score. Someone that is 5-1 loses to the same person, would the same points be taken off their score?

~I like this idea though