I think maybe the GB has hit a real 'catch 22' here!
The only way to really spark an urgent spirit is to continue to predict that the world is near it's end. The only real effective way that they have ever done that is to use dates or twisted scriptural references [i.e.; the 'generation that saw 1914'] that imply dates or short seasons that make the end imminent.
With such a backlog of failures in this regard they enter the 'catch 22'. If they do not predict with dates or seasons they loose lustre in the faithful. If they do predict with dates or seasons they are once again proven to be wrong and false prophets.
Unless the end is near witnesses have nothing to hold onto. Life is pretty worthless if we don't live it and just remain in a state of suspended animation, as witnesses. The message is fairly devoid of real meaning to both the witnesses and those to whom they preach if no imminent reason to join is present.
Afterall - according to witness lore, if u die before the Big 'A', you will get a resurrection whether a witness or not. The only reason to join is because the end is near!
Just my opinion
Jeff