Isn't there enough of the game's population to do this...
Stop allowing premades to que up for normals... that solves the entire problem of the matchmaking system. Have two seperate ques, one for premades and another one that is completely dedicated for solo players.
As a solo player because I have no interest in being friends with anyone in this game or joining clans. It is extremely annoying when I get matched with obvious premades on the enemy team. So why doesn't riot allow a truely random experience by allowing players completely on their own, so that 5 RANDOM people get matched with 5 other random people.
How is that too hard a thing to ask for?