There was a topic a few days back that had some good ideas then some inflammatory video. The post / topic was removed, but I thought there was a good idea posted that deserves repeating.
I agree with the idea of letting Class E/L/R scores last 24 months on the ranking list but Class C scores expiring after 12 months. That increases the weight of the stricter tournaments without discounting the Class C scores. Nothing controversial, but a solid idea from the person who suggested it.