To the OP:
Ex-JWs are secretive. The real organizing goes on, but is only, at times, alluded to here. I don't visit other sites or groups. The people who talk a lot, aren't very good at organizing.
The larger the group gets, the less 'in touch' we are as a unit.
Most of us are escapees from a cult. As such, many of us treasure our autonomy, and have trust issues. Following instructions (ie, in cult-think 'orders') is anathema to many. Socialization is a big part of our healing, so coalescing into an organized group, with more clearly-defined goals, and a mission statement per se, can seem like pie in the sky.
We did have a very successful online letter-writing campaign when the WT released the "diseased apostates" article, and even made the front page of some famous atheist's site (was it Hitchens?).
I think that focused efforts like that can be very effective, and communication could spread wildly via PM. If we could trust one another enough. And that, to me, is a big 'if'.
That's not a criticism, just my observations after 13 or so years, and seeing changes and trends. xx