This may already have been said in one of the other posts so I apologise if i'm repeating the point but, while I think it would be a good idea for a site, I think it should be open to all aviation professionals and academics with aviation interest not just pilots. I am not a pilot myself but the job I do means that I end up researching a lot of accident information which otherwise would not be generally known. Pilots obviously have unique knowledge and practical experience but they don't know everything; engineers, ATC, service providers, academics etc can all contribute valuable insights.