Erm.....yes,agree with most of the above re window dressing and appearing to be actively doing something,anything,without actually addressing the real issue.
A lot of this stuff,IMHO,seems to be being driven by legal departments and risk analyses to litigate-proof an organisation in the slim eventuality of a repeat event or similar.
I don't pretend to be knowledgable about the functions or processes of these departments,but it seems to me that if the chances of having a weirdo on the flight deck are "X",surely if you double the number of people in a particular situation,ie a wee break,you also double the risk,or at the very least not mitigate or reduce that risk at all.
You could even argue that the risk would be increased...perhaps?