Over the 26 years that I observed at ASA empires were built in different areas with exponential growth of staff in those areas. Very little attention was paid to replacing retiring and resigning ATC's let alone the growth in air traffic. The NOC was known as a joke amongst working controllers, why was it ever created? Another empire.
I firmly believe that Russell increased employment in areas that would make the appalling staff engagement surveys look better. Empires were created and now they're falling. Some engineering jobs and other required classifications appear to be caught up in VR/IVR. One thing's for sure, there's a number of people rubbing their hands in glee at the payout they got/getting.
The controllers at the work face will make it work, whatever Harfield does.
The best shakeup any politician could perform is put a stop to an essential service making profits, returning dividends to incompetent governments etc, won't happen but.