Total game time played added to profile
Using the data already collected about how long each game takes, having a statistic on a players profile showing how many in game hours they have / how much time they have played. It would be a matter of adding up the number of minutes each game takes and then printing it in a total game time played statistic on a players profile. This number is something a lot of players look for in games and use it to help show a correlation between skill level and time played. Another use of this data is to show an average game time played to demonstrate if a players matches usually take a longer duration or if they are over quickly with an average, by dividing the total hours by the number of games total this could be very useful data to collect and analyze!