Champion Mastery Idea

I'm not sure how many people are in the same boat as me, but it would be nice if Champion Mastery could be reset.

Like lets say you play a champion a lot and they end up being one of your top champions. But you don't really like that champion or you start to hate that champion after awhile, but instead of having to play 50 games (just a random number) to get another champion to surpass the old one in points, it would be nice if you could reset that champs progress.

Thoughts/ideas?

EDIT: A friend suggested that once you reach level 5, you should be able to change around which champs are displayed. This seems like a neat idea as well