Correct me if I'm mistaken, but I don't think CX's change in rules regarding long-haul flights that transit to China are such a huge change. If I understand, Diamond members already have lounge access no matter what airline they fly on, so the only real change is allowing Gold members to use the lounge when transiting to China? Is this correct? If so, why has CX made both Gold and Diamond members eligible for lounge access on flights to China when Diamond members already have access?