The move could reduce the degree of chaos — but only if Kelly, unlike Priebus, actually gets the power of a chief of staff.
Priebus has been on the endangered species list ever since he was appointed.
It was always clear that Priebus was merely one of several advisors at the top level. He was mostly Trump's liaison with the Republican establishment from which he came — not chief of staff in the classic sense. He wasn't given the power to enforce the president's wishes,assuming he could figure out what they were. There were too many competing centers of power.
Former chiefs of staff I talked with were unanimous, and vocal, in saying that was a big mistake.
John Kelly knows what a chief of staff's job is supposed to be. He made his career in the Marine Corps, where a chief of staff is a figure of immense authority.
The question is whether Trump knows how the job is intended to work, and whether his high regard for generals will lead him to give Kelly the power he needs.
(Trump's reverence for generals isn't boundless; he's reportedly chewed out H.R. McMaster on policies he didn't like — most notably, the recent decision to certify that Iran is complying with the nuclear deal with Iran.)
Kelly presumably gets extra points for his vigorous enforcement of Trump's immigration orders -- even though he privately chafed about not knowing what they were before they arrived.
The job of White House chief of staff is often said to be the most difficult position in Washington.
The average tenure — before the Trump administration, anyway — was roughly two years. President Obama, for all his insistence on "no drama," still ran through four chiefs of staff in eight years. Office pools on how long Kelly will last are already being drawn up.