How to balance ranked play and diversity
Make ranked Nemesis draft simple as that
how much more balance can you get in LCS and general games than -no control of your champ -you get to decide who you play against -no 100% assurance that the enemy will give you a "meta-comp" forcing people to look twords to avenues of winning (because what will you do if they give you five ADC's? no jungler, no ap they just build armor, no heals or tanks, how will you win?)