WHERE are you going to get the Pilots from? Back from the RAAF and the RAF? I don't really think so do you? Have you got any idea how many pilots could even be considered for a Fast Jet role that are still in NZ?Regarding an air combat group, I believe that it can take around 5 years to rebuild the corporate knowledge needed to have a quality air combat element.
The cost of re-establishing a Fast Combat Jet will run into the Billion OR two, take far more than 5 years, and you'd still struggle to man the Force IF you leave RNZAF pay levels where they currently are.
Y'all want to improve the force get better Transports, A400M's IF they work out would be better for NZ than C-130J in my opinion and replace the Orions with a mix of P-8's and BAMS-style UAV's.
UAV's as a whole are notable for their absence in NZ, THAT would be a near-term area to address.
And dump the SeaSprites and get back the Super Lynxes NZ wanted in the first place, a much better choice for NZ maritime needs.
Regards,
BUG