If DJ were going to look at something like this, it would operate on a separate financial basis to the domestic operations - so if the long haul USA section did not survive, the domestic operations would not be hugely affected. My guess is that it would operate as part of Pacific Blue (Australia)...
The reports on PPRUNE and also in the media a week or two ago suggested 777's or 747's, not sure where the 767 rumours came from?
The USA idea was just one of 15 ideas raised by the Business Development Unit recently presented to DJ management, and heres hoping it goes ahead! Cheers