The Leaderboard in the Member Area has seen a revision to the the filtering options. You will now be able to filter the leaderboard by the 2014 Season, 2015 Season, or by your statistics for All-Time. This additional will obviously not be beneficial until next season but be aware it does exist. By default, the Leaderboard will filter by the current Calendar Year and will automatically flip come next season.
As long as your membership stays current, you will be able to flip between seasons and compare statistics. If you let your membership lapse, don't worry, you will be able to re-activate your account and upon renewal bring back your statistics.