Who cares where they fly them STP it is surely time to take them seriously.
That's why I said I didn't want to appear dismissive of HKA but my question is still relevant. There's no point getting shiny new aircraft if they've got limited routes to justify their purchase. I don't think for one minute that this hasn't been considered by HKA management but we can only speculate whether or not they will compete with CX on the same routes - unless anyone has any rumours as to their route expansion plans.......
As far as local pilots leaving CX in favour of HKA is concerned, that would only become an issue if significant numbers were involved. What that number might be, who knows? That said, your point about HKA being competition in more ways than one is valid.