Well as someone with sources VERY high up in CX you should try to educate them.
It has been said that JFO upgrades will slow down by the end of the year. By the end of the year the last of the DESO joiners will have upgraded. These are the guys/girls who will not be looking to jump ship ASAP as get paid around about what a skilled expat in HKG should after a few years with a company. This will even further annoy the icadets, who are looking to jump ship as soon as they can as could have a better quality of life back home doing the same job.
As soon as almost every icadet has 3 years as an FO they will have applications in with other carriers at home. Those that don't care about living at home will have applications in with the likes of EK, tax free, housing, 6 years to command. Once these initial icadets leave it will drive up conditions for those on local terms as CX realize that their plan has not worked and the airline will be parking planes due to lack of crew and they need to do something to stem the flood of leavers.
Hong Kong is not a particularly nice place to bring up a family, small flat, bad air, rude people, expensive food for an expat, stupid lists for schools that cost a fortune to get into and are not that good, miles away from family etc etc. Almost everyone has the hope of having a family. On local terms in HKG for someone not from HKG it is not doable.
Yeah the expat package guys need to worry do they. I actually think it is CX who need to worry about the path they are taking. In as little as 3 years they will start to feel the mistakes they are making.