I would love an HKG EWR route. I just moved to HKG after college for work but fly back to Washington DC 6 times a year to see my family. I currently fly CX J into JFK, YYZ, or ORD (based on whichever is cheapest) and connect to either IAD or DCA.

I would definitely consider driving home to DC from EWR... but certainly not from JFK. Hopefully, Amtrak would add a late pickup from EWR station that could connect to PHL and to Wasington... reducing the need for connecting flights. Especially since trains are rarely canceled.

And I would fully support a CX flight into IAD!