I do wonder about any changes in the algorithm which drops the cw of a relay [1] by a magnitude within 1 year as seen in [2]?
[1] https://metrics.torproject.org/rs.html#details/1AF72E8906E6C49481A791A6F8F84... [2] https://screenshotscdn.firefoxusercontent.com/images/040958f1-a5be-4630-9551...