Who is old enough to remember when Witnesses used eagerly to meet on a Friday or Saturday night to "pre-study" the Watchtower in groups: reading paragraphs, underlining, reading scriptures (sometimes)?
What happened to that, does anyone still do it anywhere?
I think Witnesses are just not as enthusiastic about the "truth" as they used to be. If someone tried to get such a group going in my congregation I think they would think it was mad: "I am too busy", "I'll study my magazine alone so I can concentrate" (says randon last minute underliner).
Maybe there was some injunction from on high against these groups meeting independently? After all it must be a bit dangerous for the organisation to have people meeting together to discuss doctrines informally where they actually might express themselves freely... It was just such small Bible study groups that caused the problems in Bethel in the early 1980s.
I think for older Witnesses Watchtower pre-studies are symbolic of what used to be exciting about being a JW when you believed it, and everyone else believed it, it was new, and the new system was just around the corner. Even loyal diehard Witnesses nowadays don't seem to have that kind of happy outlook. Even for the faithful it is more like an endurance trek and test of their stoicism to remain in the "truth" than the joyfull stroll in the sunshine that it seemed to be in decades past.