I don't think you can look at the weightings in this list and make light of economics. At first glance one could deduce that we must have needed more Wg Cdrs and Gp Capts this round. In contrast the next round could be mostly made up (for the most part) of Flt Lt - Sqn Ldr promotions. What then? PPruners crying that we don't have any suitable people for promotion to SO1 or higher? These things are always an 'Ebb and Flow' deal and not worth too much brain work or enthusiasm from one's armchair