I called last week to see if I could book some international trips using the system wide upgrades, the agent asked which type I had, I just said I am a 1k and had been issued 6 of these system wide up grades.The agent indicated as a 1k we could expected to be upgraded 100 hours prior to departure. I said I would then wait to see exactly how these system wide upgrades are going to work. Even being upgraded 100 hours in advance gives us an excellent chance of being able to use these to our benefit.
I would think the confirmed NA upgrades would have a higher value the the coupon books. But who knows?