Only allow Tier 2 mastery champions to be played in ranked?
Was just a thought, but now that the mastery system is in place for champs and has been for quite a while. Wouldn't one effective way to keep people playing brand new/champs they've never tried before in ranked be to limit your ranked champ select pool to champions you have earned Tier 2 or maybe 3 in in normal?
That would mean that one would have to have a least played a certain number of games with a champion before committing to a ranked game?