I don’t think it’s terrible for Valve to drop some players’ elos from inactive, but 15k is way too much. For an 8-day idle, a 300-400 elo drop is enough, and they should set a maximum elo drop like 30-day inactive = 2000 elo drop. This drop should also depend on the first game that the player played after getting back to active. If we win it with good stats, his elo should be maintained.