MVP: reward team players through bonus points and xp, or a addition to a summoner portrait

It's no secret that people will respond positive reinforcement, and this definitely extends into LoL . I think creating a way to show appreciation to team players would be a positive addition to the game, especially if the one chosen happens to be in a under-appreciated role like support. If someone can unite the team and be a positive force in the game, it seems only logical that they get recognition for the effort. This along with the honor system that already exits would be a great way to promote positive behavior. It seems simple enough: Winning team votes for MVP, play with most votes. If there is a tie, both players get rewarded. Now, I'm not positive on how implementation should go. Can a person vote for his/herself? Further issues and etc. But that acknowledged, I think is a cool idea.