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I know this has probably been brought up before but I didn't know where to post this. My suggestion is to have a most valuable player for a particular match after each game. You can have a MVP for each team and then the match's MVP. Also, each player should be evaluated for their contribution with some type of score. This is mostly for one's own personal gain, as seeing what you contributed helps you to improve in further battles.
Also, one other suggestion. Instead of rune pages, I think if you own a champ, you should be able to customize each of your champs individually. That way you can have a set of runes for each individual champ and not just some general rune page that may not even be optimized for a particular champ.