"Wonder whether the regional airport issues will come up too? Probably not is my guess as it will dilute the challenge"
That could well be spot on Suzeman. Rightly or wrongly, MAG evidently decided that the Davies Commission was really about capacity in the SE, not the UK in general, and focused their efforts accordingly. It seems unlikely that will change, at least until any final decision about new runways is made.
As others have said, it was disappointing that having emphasised the importance of the O & D market and not just the hub concept, Davies didn't push harder the case to maximise capacity at airports outside the London area.