In fact.
After Tobirama Senju had been fully resurrected.
Although Uchiha Minamoto had sent this Second Hokage to Kumogakure.
He still had not abandoned his passion for scientific research.
He simply had no results to show for it yet.
And even setting Tobirama Senju aside.
Orochimaru's research into [White Zetsu Cells] and [Hashirama Cells] was not necessarily better than Uchiha Minamoto's!
Do not forget the existence of the [Heart of Great Love]!
All the technical information Orochimaru possessed amounted to nothing before the [Heart of Great Love].
Lastly.
The shell of the demon Moryo.
Uchiha Minamoto had some interest in it, but not much.
After all.
Moryo was an enormous nonhuman life-form.
And it was not a creature made purely of chakra like the Tailed Beasts.
The miko of the Land of Demons had forcibly separated Moryo's body from its chakra.
That meant Moryo was an existence similar to the Katsuyu Sage or the Toad Sage.
However...
Whenever Uchiha Minamoto thought about how Moryo, this supposedly world-destroying demon, could not even defeat Naruto Uzumaki before he mastered [Sage Mode], his interest in the demon rapidly plummeted.
What level of ninja was Naruto Uzumaki in [Sage Mode]?
Stronger than an ordinary Kage Level ninja, but definitely short of Super Kage Level.
Using Naruto Uzumaki in [Sage Mode] as a reference and comparing the demon Moryo to him.
One would find that the demon Moryo's strength was roughly equivalent to Kage Level.
How could a monster of that level warrant much attention from Uchiha Minamoto?
If he had time to research this so-called demon Moryo.
He might as well research the Demonic Statue of the Outer Path!
The Demonic Statue of the Outer Path was also an "empty shell."
But its level of strength was higher than Moryo's by who knew how