Would PVG as a hub be a working hub like NRT, insofar that would Delta be able to operate, on their own metal, PVG-SIN, MNL, BKK, HKG...basically all the intra-Asia flights it currently serves from NRT?
Maybe Delta would be better off taking Deliveries of 787's ASAP and starting to use SEA as its transitional hub to those South East Asia destinations?