Hi Mark,
I think your blog and article is well written and the arguments sound. My concern is that a JW reading it would just go "Of course I obey Jesus, and see how much Jesus trusts the Governing Body - he has appointed them over all his belongings. If Jesus trusts them, shouldn't I."
I just find you get nowhere arguing with a JW. As a wise person told me recently "If you try and take something away from somebody, they only hold on tighter." In my personal experience I have found that just being nice to a JW works better than anything. They are primed to think that "apostates feigning love may try to lead you away from God's organisation". If you don't try to argue with them it is going against that false stereotype.
That said, for those who have no commitment to the religion, your article will certainly innoculate against future infection.