right now fuel used by an aircraft is Xkg/hour regardless.
In order to make us better airline managers I'd like to ask that a planes fuel usage be much more responsive to each individual flight, just like in the real world when a captain/ops plan fuel load based on load, weather etc.
a) that the fuel used take account of pax load, so half empty 747 uses less fuel
b) ditto cargo
c) that we be able to adjust speed like Airbus's CI (cost index) to gain fuel efficiency
Simon