I have not read every point here but will say this...
I cannot see anything like this happening but that is not the question. The question is, would they do it if told to. My opinion is the society is very capable of twisting the scriptures to say whatever they want. They are probably better at mind control and cult tactics than Jim Johns himself. If they were to say we have "new light" and view Christ Jesus sacrifice as a suicide than they could accomplish this. They could figure out a way if they were that demented but thankfully, I don't see them ever doing something this evil. I tend to think they really believe they are Gods chosen channel and they are doing good in all the earth.
The truth is, most hardcore JW's will do whatever the borg tells them to do. That is the program in place right now.