New Zealand have stripped Brendon McCullum of the vice-captaincy in the hope he will be able to score more runs for the side.
With a roster of duties to perform including that of a key batsman - he stands top of the order in the one-day formats - as well as keeping wicket, McCullum shoulders plenty of responsibility for the Black Caps.
However, no replacement is expected to be named, meaning that Daniel Vettori will lead alone with senior players such as Kyle Mills, Jacob Oram and Shane Bond joining McCullum in offering their captain advice.
New Zealand have already lost coach Andy Moles this week, less than a year into his tenure, but convenor of selectors Glenn Turner played down the upheaval.
"Brendon being Brendon, he will (still) lead," Vaughan told the New Zealand Herald.
"That's his nature. At the moment he needs to be focusing on several areas but primarily that is around fulfilling his potential with the bat."
McCullum told the same newspaper: "It's disappointing, obviously, in many respects but the fact is I can now concentrate on my roles of scoring runs and keeping wicket.
"I still have some fairly big goals I want to achieve for New Zealand, including the captaincy, and this has not changed that."