Consider Frequency of Play when Matchmaking?
A thought occurred to me:
Does the current matchmaking system take into account how often a player plays, or how rusty they are, when it determines who to match them for?
For that matter, does it match you at a lower level for your first game or two if you haven't played in a while?
These are interesting possibilities, and if they are not implemented, I wonder if they might help players who play less frequently to be matched more fairly.