Change The Leaverbuster System.
The leaverbuster system right now makes it so that one who leaves a certain amount of games is forced to wait twenty minutes before queuing their next five games. I propose that the system be changed so that every time you leave a game, you must wait twenty minutes for your next game. The reasoning for this is simple, with the current system, you don't know how many leaves away you are from leaverbuster, and once you hit it, you suddenly have these five games that you have to play, with an empty waiting time of one hundred minutes in total. It takes a while to get off leaverbuster. During this time, you can't queue with friends because nobody wants to wait through that. All in all, it is just a big burden and nobody knows how close they are to getting it. Also, if somebody thinks that they are far from getting leaverbuster, they will feel free to leave a game every now and then. With the new system, each individual leave is punished, however moderately. This way all left games go punished to some degree, discouraging leaving even more than the current system, while still avoiding excessive, clustered punishment.