Skeeter... very interesting perspective...
KH meetings are held in rows not in circles... you're so right.
I also think they wanted to eliminate the opportunities for questions after the meeting... I know there were plenty of questions from me and others after the second round with the red Apocalypse book...
The GB knows very well that opportunities for these questions are quite limited a KH environment... after the service meeting, for example, elders are too busy counting money, grading talks, and talking shop amongst themselves to be bothered with questions they can't even answer. So JWs who are on the fence tend to feel intimidated and prefer to simply head for the exit than to wait for an elder to break free (from his idle conversation with other elites or whatever they're doing for jehovah)... INFORMATION CONTROL... very well orchestrated by the WT...