 He refused to update the command structure of the Air Force from one based on region to one of function, something his successor, Air Marshal Hardman, would accomplish, and has been criticised for a systemic resistance to change.Jones was described in David Horner's "The Commanders" as "a steady, sincere but colourless leader", while Alan Stephens found him "a good and decent man, who had overcome considerable personal hardship in his youth to achieve exceptional professional success" but "neither an inspiring leader, nor a notable thinker".Nevertheless, his Plan D for the RAAF's post-war organisation remained the service's blueprint until the early 1970s.