4. Scrap all other branches apart from engineers, intel branch and aircrew - and then man to the right numbers. Rocks can join the Army, Coppers are MPGS and all others are provided by Serco or other type companies (Drs, Dentists, PTIs, Admin, Air Traffic, Suppliers, etc...).
Well clearly you are aircrew then.
It seems you are under the belief that aircrew are the only people that have any input into an aircraft getting off the ground.
Whilst civilianising the above trades in the UK might work (although it'd be incredibly expensive), who are you going to rely on to get your aircraft off the ground when you're on operations? Or will you fuel your own jet and do your own air traffic when you're on ops?