I agree. I have to say over the years there have been several occasions where people who asked to vist the FD started making my hair stand on end and I was thinking what was the best way to get them out quickly. It becomes apparent for whatever reason they are not 'right' or they start saying bizarre things and suddenly you feel uneasy with it. I am glad that officially access is now severely restricted, and if I fly anymore, I will keep to it. You just can't risk it anymore. Having said that, as far as family members that you know are concerned, or even retired colleagues, then they should be allowed. The answer is to give discretion back to the Captain.