I think the 3rd suggestion relates to J2O some too. We barely get any reviews now (people have to ASK other people if they at least want one review on their level) because barely anyone wants to review when they don't get anything out of it.

I remember when we had the status stuff like "l33t reviewer" and "I might as well work here" I was determined to review a lot to increase my rating.

In my opinion, having short reviews is better than having none at all.

On the topic of JCF, I think its just in a pit right now. In other words, sometimes it has its peaks, sometimes it has its downfalls, sometimes it has its inactivity. Maybe give it some time and it'll get better I guess.