Your tale is very comprehensive, dantoole87. You capture very well the pettiness and over-lording of elders. But you are not alone in representing this issue. That is why I would disagree with you on one statement:
"JW's could be a very good productive religion."
Their entire platform is conducive to all that you describe happened to you. If there are people still in it, it is because they're either masochistic or are still brainwashed. I liken saying it's a good productive religion with saying the plague is a good and productive disease because it kills the weak. There is nothing redeemable about that religion. Are there good people in it? Sure. Can some people in it do good works? Yes. Can they even promote good values? Absolutely. But so can the rest of the world, atheists and Flat-Earth believers, Shintoists and Xtians, famous people and the vast unknown sea of individuals. The operative word here is "PEOPLE." When it starts to muddle up into an "organization", it's time to run.
By its very structure, the congregations end up being currupted either by all members or by a few with delusions of power. They end up turning into, as you describe, "assholes" and "yes men." Still, it's a pity that you had to experience all you have and I wish the best for you as you move forward in life.
You managed to revive in me the same anger you feel when looking back at the experiences we share with elder assholes and super-fine brown-nosers. It's been a while for me, but I've mostly shed my fury at those people. Although I wish they'd disappear from the face of the Earth as an organization, their works will eventually catch up to them. All the best to you in your endeavors.