If there is a part that concerns me it is "limited by ATC capacity".
I alluded to this earlier with reference to the authorities allowing themselves plenty of wriggle room.
What exactly does it mean?
Well it seems clear it could mean that if it suites ATC to have 10 aircraft in the zone at any one time, 10 it will be. In other words we are all trusting NATS to ensure they have the capacity to handle ALL the traffic that will want to operate within the zone during this period of time, or, if they dont have that capacity to enable the vast majority to do so. If they dont, from a practical point of view, we could see restrictions that amount to the zone becoming an exclusion zone other than in name only.