Create an in game chat system that uses microphones so that you can actually talk to people
Think of all the advantages there will be from being able to actually hear someone talk to you especially in ranked when team work is such a huge part of league of legends. Players would spend less time typing and more time playing the game. Players would be less likely to insult or berate their partners via actually talking with them because it is easy to hide behind the mask of the keyboard but when you are actually talking with someone people tend to be more personable. With a game that is so competitive and so widely played I have no idea why this has not already been implemented. I'm sure I barely even scratched the surface for the positives. Please Riot actually take a look at this as a possibility. I would VERY much like to see this put into the game.