The Sad thing about the mastery System

Is that it values Kills way more then assists. Going 5/0/14 will give you an S, but going 14/0/5 will give you an S+. That is really sad. Helping your team and getting them fed isn't recognized at S+ worthy behavior. What's even worse is, if someone goes 0/0/25, It will give them an A--A+ rating, pretty much saying to that player that Fully Supporting your team isn't a healthy quality and you should be taking more kills.