Things Riot Says: Masteries

#Number 1

On Removing Oppressor > Champions either have perma-crowd control or they don’t. How you play makes little difference when the only question is whether you can activate Oppressor or not, so we’re removing it in favor of more versatile options. See above.

On Adding Courage of the Colossus > Giving initiators a survivability tool in the moment they need it most: diving into the enemy team.

It seems like "champions either have hard CC or they don't" is not a "question of whether you can activate it or not". Come on Riot, you are better than this.

#Number 2

On Masteries >Last pre-season saw a ground-up rebuild of masteries with the goal of making mastery choices more about individual playstyle than numerical buffs.

On Fervor of Battle >We’re switching Fervor’s bonus to raw attack damage, a stat that fits in multiple approaches toward extended fighting.

Now you don't need to be build on-hit to use Fervor, anyone who attacks fast and benefits from extra AD can be decent with it. In short: A numerical buff.