Were the Hello HK people a bit too proud to make a bit of noise and offer a few hundred free tickets from European and American cities as part of the give away? Seems to me it would have been picked up in the news quite widely and could easily have been spun into some good publicity. At the very least it would have put HK front of mind briefly, especially if tied in with the sevens.
Instead we got inconsequential “goodies” for people who would have come anyway. Standard HK screw up I guess.
As for mainland... I've got myself a guidebook and plan at least a couple of trips in the year ahead. Seems silly not to take the chance.