As a slight aside from the underlying topic here. About two weeks ago, talking to London, approaching from the Akiki direction, a United States Airline (No Names) told ATC that they had a medical emergency on board. On further questioning from London it was disclosed that it was a pax with a blood clot, spreading!!! London asked did they want to declare an emergency. "No" was the answer, yet they still became priority traffic into London. As (non priority) traffic on the way inbound, we saw holding as no hardship at all, and would have offered too, if necessary. Surley, professional pilots with any airline, can see the urgency in a "medical emergency". If a fellow collegue decides that he or she deems they have a "medical emergency" on thier flight, and they don't declare a "PAN", then that's their choice. They have the facts to hand about their circumstances. The least we can do is allow them a jump on a 5 minute hold, right? No? Maybe I'm too soft......call me considerate?