I can imagine how well this would work! After all BA are already great at allowing premium passengers priority when getting on to the plane, eh..?!
Visions of dozens of BA 747s going in circles trying to work out social status (No. GGLs / No. Bronze + No. MPs / No. Top Gear presenters / amount of fuel left...

) while all the FRs merrily land first due to 'unplanned fuel emergency..'