Champion mastery feedback
Great system, but don;t halfway it. That system was made to reduce trolling in ranked and to create a more enjoyable gameplay experience for ranked play. You need to set a requirement for players to have mastered a champion prior to allowing it to be unlocked for use in ranked. To get players started unlock their top 16 most played champions, and after that make itso you must have mastered champion to xx level to unlock it for ranked use.