I would return to Jehovah's Witnesses if they became "Witnesses" to the fact that they taught lies and misused the Bible and that the Bible was designed to be misused. But still, only if they switched to being an organization out to do good, using their printing presses to produce educational material about important matters and their material contained no propaganda whatsoever. And still yet, if their Kingdom Halls were used as some kind of real benefit to the neighborhoods.
You know, as I type this, I can keep adding stuff. Nah, I still couldn't do it. I suppose the only real answer would be that I would return if I were dead and they dragged me back.