Am I the only one who likes the new mastery system?
I think if you could get to mastery 7 by just playing more, that would just give everyone mastery 7 in no time. At least now you have to choose where to spend a (semi) limited resource that everyone eventually has access to. This way people actually see that you're dedicated to that champion, and you won't have two dozen level 7 champions by the end of the season.