Tom Towell
complete
Ranks wont decay after inactivity but the leaderboard will filter the inactive players. Once they return and play a few games the LB will display them again
Cody Cummings
Building on this, if instead of a true decay, YoungCaliman92 suggested having a decay that starts after X amount of inactivity, (1 week? 2?) but jumps back up to where they were if they play/win X number of games.