They've always said that family heads should have some sort of family study. The FWN was simply a ruse to take attention away from eliminating the separate book study night. All they have to do is not mentioned it or mention it in passing (like the family study) and problem solved.
Clearly, very few families are using the free night for FWN. And, there's no way to police it other than asking the family head who will always answer yes.
Honestly, JWs have lost any real passion for their religion and apathy is at an alltime high (in my opinion). I'm not sure why they thought the FWN would help, other than give JWs a night off which made most happy but did nothing to cure the apathy.
Hey, Bethel monitors if you want to reignite the enthusiasm among the rank & file either: 1) set a new date for the great trib to begin or 2) make the meetings more interesting and introduce the concept of community service as a form of sacred service so JWs can feel good about something.
On second thought, carry on!!