Indeed, these are things that I view as game evolution. It is very rare to have evolution in the games defensive aspect after years though, it's usually just honing up offensive tricks. As a user of CB I think it makes the game better and allows for a more deeper pool of players to be used positively. I have only positive emotions to go along that, if I felt it was cutting down on my arsenal overall I might be emotionally struggling with it and come up with conclusions against it.