I think the private forum is a good idea. I have not read all the comments yet so I apologise if I am repeating anything. I personally think it should be open to all licenced Commercial Pilots/ATCO's/Engineers. Aviation is about safety and CHIRP is produced for that reason. If we all work together it will continue. A private forum limited to pilots only is all and well but input from others (ATCO's/Engineers) should be welcomed.
On the negative side it would be difficult to validate all applications and I'm sure someone who was not licenced would find a way in and then all is lost.
Rgds
ILS 119.5