Some of the above posts appear to have been written by a handful of primary school children. What amateurish drivel. Talk about clutching onto emotional straws. If I could miraculously put all locals onto expat conditions I would. Fantastic. However...
The HKID issue is completely irrelevant to your COS. Your COS is based on what you brought to the table, professionally speaking, when you joined CX/KA. Period.
As for having the expat COS pulled from underneath us at some time in the future... Well, perhaps it will and as opposed to those grizzling above who talk the talk without walking the walk you will find many, many leave. As they did from KA over the last year or so prior to some improvements arriving.