Why would Singapore not be considered? I've never seen it mentioned. I think I am right in thinking that Singapore has had open skies for years now. Any thoughts?
One of the most expensive cities in Asia, if not the world. Competing nearby destinations in Thailand, Vietnam, Indonesia, Malaysia etc offer the tourist far more in terms of beach resorts, value for money etc.
As far as the airline industry goes, lots of LCC competition already from the likes of Scoot, Tiger, Jetstar, Air Asia etc, while SIA and the MEB3 have the connecting/stopover/business/convention traffic sown up.
By starting with the North Atlantic for their initial foray into longhaul low cost Norwegian chose well. Very high traffic volume, generally lousy competition and with a high cost base, so relatively easy pickings for them. They will need to tread a bit more carefully when venturing east....