Nice blog, Mark.
When I first came to visit a Kingdom Hall, my perceptions were quite similar. A single visit usually isn't enough to really get everything that goes on, but the Witness-style love bombing of newcomers and the unspeakably dull and repetitive bible-dissection talks also struck me at first. Of course, they always boil down to "obey us", it's just that the language is veiled so that outsiders don't get it so quickly.
The thing that really got me thinking was when I understood that everything is centrally controlled there. Now, in pretty much all other churches the local congregation and/or priest has some degree of freedom to decide how to run the services, what to talk about in sermons, how long, if they run childrens' groups, etc.
In the Witnesses, no such thing. The leaders tell everyone in the world exactly what to read when, how many minutes for this and that part of the meetings, the topics and structure of talks, even the questions and answers for these so-called "study" parts are already prepared. Individuality is only allowed in trace amounts. Do it differently and you get in trouble. Show the weakest signs of dissent, and you'll be invited into the back room for a little friendly shepherding.
Once you realise this, the whole thing gets really creepy.
(Frankly, as an atheist myself who once went through a similar phase of looking at all kinds of religions, I would probably go to the Catholics or an Orthodox Church if I was forced to choose a religion. I like all the fancy rituals, the singing, the impressive architecture of old churches, the mysticism. It's fantasy, but at least visually and mentally appealing fantasy. Going to a JW meeting OTOH is like going to office work. In a particularly dull job with zero creativity and a boss that's constantly watching you. Who would want that?)