A strategic reboot seeks to put Luxon above the fray and the party on the front foot. Something, the thinking must have been, had to change. A drip-feed of disatisfaction from National MPs and staffers together with a pair of energetic coalition tails wagging the National dog had created a corrosive effect, agonisingly chronicled in the media. It culminated in the indignity of a 100-hour gauntlet in which Christopher Luxon found it necessary to …