People on a base knowingly give up housing and education by taking that base (or joining on a base) so don't go crying about not having it. Same goes for the pay scales.
Likewise if HKG based pilots want that 13th month contractual then take a base!!
Stop whinging and if we want to improve things contractually, lets get the AOA to do it for us (or at least try) instead of whinging about what he has and what he hasn't got.