@ Riot, Resets on Champion Masteries

I think it would be a good idea to reset champion mastery on champions that get a full rework or at least drop the current mastery rank a tier or two. I think this would be good since you have to re-learn how to play that champion to realistically get back to the current mastery level with them.

When a champion has a big rework, there counter picks change, power spikes change, etc. and it takes time to learn the new power curves. This way mastery rating actually matters.