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.
I also don't see what benefit to the forum this suggestion would have. Many hero members are not as active as they could be on here, but in times of crisis come in when needed (when very bad BTC related news breaks for example).