Aram Adjustment to Team Selection, avoiding unbalanced games

An Idea for ARAM matches within league. Aram is a great quick, more laid back game compared to ranked play, however teams can be quite unbalanced within the game. I.e. a full ranged vs full melee team. Or a team with all cc, and a team with none. So perhaps in order to avoid some of these conflicts the concept of rerolling can be used in two ways. To start the reroll option gives a player the chance to get a better random character from those they have unlocked or in free rotation. However I believe it would be pretty cool and help with balancing the creators of league added another phase to the character select screen, revealing the enemy team and allowing players to expend their own reroll chances on enemy players. This will can force players to play new characters, have a chance to avoid team advantages. Can force players who are only comfortable with one or two characters to switch it up. Just an idea, the only reason I recommend this is because quite often I notice ARAM matches being completely one sided, also it can add a fun twist to an already fun game.