The nexd be to cut the status of people who haven't posted in X time interval.
You can't be a Hero if you've not posted the past week, you can't be Senior if you've not posted the past month. It'd help with the buying/hacking old accounts to prop scams.
Nah. Posting shouldn't be a full time job. If I go away for two weeks I shouldn't be dropping ranks. Scammers would just keep buying accounts anyhow.