It's a good idea in theory. One problem is that not every EX JW is active on these boards. This is the board that has the most action, but even though there are thousands of members, not that many are active at any given time. So I'm not sure we could get enough people to make an impact. Possibly Simon, who owns JWN, could generate an email to them, if he felt that was appropriate, and I doubt if he would. He takes privacy issues seriously, and many who come here need their anonymity.
The problem with many ex JWs is that a lot of them don't know the truth about the truth. They left for various reasons but still think it's the only true religion, they are still under cult mind control and are afraid of us so called apostates. I didn't look for JWN until eight years after I left, I still sort of believed the myth of the scary, bitter apostates.
Still, it's an idea worth exploring. I think there is a thread right now working on something like that. This may be a pivotal time for the Watchtower. They are obviously in some kind of financial trouble and are coming up with ridiculous explanations for their generation teaching. There must be a lot of people in the organization who are having doubts, it would be great to take advantage of that.
Another problem is there needs to be someone to spearhead that. There are some EX JW activists out there, and there was an an activist EX JW organization, whose name we must not mention, that tried to do something like that, but they made some major missteps and burned a lot of bridges in the ex JW community, some of the members were banned from here. So you would need a new group or individual to do this, I don't know of anyone who is in a position to take it on, or has the necessary expertise.