Your best bet would have been to have 2 beta testing groups. The paid group- us right now. We get restricted forum access and we just do what we ddo now.
Then the free beta group. They'd sign NDA's and would have unrestricted access and ISI picks them out from a group of applicants. If they are not active, or not helpful they lose all access.
The problem is that the beta was sold as a product (even though it isknown to be an unfinished beta) which grants us certtain rights but people think grants us even more. So the forums have turned into.the wild wild west.