Estimated Game Duration

It would be very useful if there was a graph shown, that gave you a rough idea of how long a game would take, for the game mode you're queued in. The game requires quite a time commitment, since even an ARAM match takes at least 15 minutes. Furthermore, the game has penalties for leaving a match early, regardless of reason. Without accurate information on how long the match will last, you need to gamble based on your recollections and best guess, and hope you've estimated correctly, if you can safely play a match. Please add some information on how long matches are expected to take, when you're queueing up. A simple bell-curve would be easy to understand, like this, and I think it would be a valuable addition to the game.