I think that the score calculation should be slightly different. It's Glicko, isn't it?
The changes should appear in matches, for example 5 games match:

Now if you win such match, you gain, let's say 20 points.
But you all agree that winning 5-0 is more valuable than 3-2, isn't it?
Could the scoring system be modified, so that the winning player would gain score adequate to his result in the match, not as in single game?
Example:
I win 7-4 in a match. normally, Glicko calculate would my new score, so I'd get 20 points. (let's keep it simple) But since I've won 7-4, Glicko's result is multiplicated by 7/4, and therefore I recieve 7/4*20=35 points. On the other hand, my opponent loses 7/4*10 points, which means his/her score is down 17 points.

In case of winning 5-0 (5/0's absurd) we could use 5/1.