you just forgot to mention dealing with the crap onboard IFE system, placating premium pax who have been mishandled by BA, placating many non premium pax mishandled by BA, help in the CW service, etc, etc. And thats just the first few hours of EVERY flight.
And this differs from LGW how? They achieve the same level of service with 2 less cc and the cm is on A LOT less money. "Slave wages" is the term I believe?