F2P -> P2P

After reading infinte threads about smurfs, flamers, afkers etc. Im not saying this will solve all the problems. Like F2P can only play 2-3 ranked a day or have restrictions that prohibit some aspects of the game, atleast you get that smurf out of the way in ranked plays? What are the Pros/Cons, any thoughts? Or is smurf to much of a big business for Riot that they dont "want" to do anything about it?
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