I've asked for information and have a bit to share with you.
We're going to be fine tuning this over the upcoming weeks until we settle on something that we're fully happy with. This was something that you guys have been asking for for awhile and the balance team and myself were pushing for, so I'm glad to see it get into today's patch.
Basically if you haven't played for X days (currently set to a week) then we decrement the top 200 rated players per leaderboard by (rating - 1000)*Y where the current value for Y is set at 4%.
The mathless version is that if you don't play for a week you'll start to drop in rank bit by bit until you either play again, or you drop out of the top 200.
Again these values may be adjusted, so your feedback on how it's working is important.
Thanks for clarrify.
But I also find it strange that is is only for top 200. I am a top 400 player atm but I guess I do not have a bennifit of this.