Guv,
Your comment that CSD's/Pursers pay should be more than a FO's is one of the most ridiculous comments I have seen for a while.
The Purser may well be at the coal face when it comes to dealing with the pax and presenting the company image etc. (A job I would not like to do for all the tea in China). But even on a normal sector a civil aircraft needs 2 pilots, they may not be that busy all the time but throw in a snag and some crap weather and then ask the 150 punters down the back who has the most responsible job!