Sort out the various affairs in his village.
Lay a solid foundation for his own succession in the future.
This was also what every Kage ought to do before a "normal succession." It was just that in this world, setting aside the Snow Shadow, who was only the first of his line, the "Kage" who could succeed through the usual process were actually in the minority among the other Five Great Shinobi Villages. Most of the Kage here had to fight on the battlefield themselves, and dying in battle was commonplace. As a result, a Kage might die before his successor had even begun training, or just after that training had started, leaving the successor no choice but to take the position prematurely.
Often,
the village fell into chaos
because of this.
The successor had not established his prestige.
He was unfamiliar with all the village's affairs.
The enemies of the Shinobi World were stirring.
The village's own subordinates remained doubtful.
There were even rivalries and attempts to undermine him behind the scenes.
Every major shinobi village had experienced these things.
The Sand Ninja of the Land of Wind had been the unluckiest of them all.
From the First Kazekage
to the Fourth Kazekage, who had just died in battle three years ago,
every one of them had died an unnatural death!
And they had all died before their successors were chosen.
Some had died in war—the First and Second.
Others had been assassinated—the Third and Fourth.
On top of that, Sunagakure had already been the weakest of the Five Great Shinobi Villages.
The Kage had died unnaturally one after another.
And each succession had required a struggle before a successor could be chosen.
This had directly caused the Sand Ninja to decline over the past two or three decades.