Flexible response,
"The only reason that an extension beyond the age of 55 years is being contemplated and orchastrated is purely for the benefit of airlines that are short of crew."
No, its not the only reason as you know well. It is a reason but its expensive until Legislation makes it compulsory. Legislation in many countries (EEC, USA, Australia) is going to make HK the odd one out. How will you feel when a UK based guy has a retirement age of 65 and exercises his right to return to HK where you have to retire at 55?