I remember the fuel fly-spec charts that used to be published showing your personal fuel uplift (above MOR) versus all others, some thought it was pressure, I thought it was informative.
Besides I also remember Lucas (CP back then) clearly saying that he was more concerned about those at the bottem left of the chart (carrying little or nothing over MOR) rather than the top right (carrying heaps).
To me that demonstrated a very sensible approach.
Nowadays its just the fuel conservation group that puts out the occasional newsletter, thats hardly unreasonable pressure to put on an professional Captain and crew.