For the first time, a flicker of Asmodeus's attention is drawn to the matter of Bun.
There is a new visitor from Earth. That is, in and of itself, not very unusual. Rasputin had visited Golarion quite recently, and he had traveled through both time and space, while this Bun only traveled through space. Strange and interesting things had happened on Earth since Asmodeus last paid attention to it. He is interested in these concepts of "vaccines" and "antibiotics" and "hygiene."
His inquisitor's logic is sound. Fewer children in the Boneyard means more petitioners in Hell. In any war, as many soldiers die of disease as in battle; improved medicine is a decisive strategic advantage. Painkillers he is generally opposed to, but their development doesn't mean that people have to use them.
He sees hints in Chrisor's and Tanidio's mind of the possibility of greater powers. They have machines that can do laundry like a wizard; do they, therefore, have weapons as powerful as a wizard? It is at least a promising line of inquiry.
Bun himself is difficult for Asmodeus to see. There is little of tyranny in him, little of pride. His mind is direct, in a way that reminds Asmodeus of Irori or Iomedae; there is a state in the world he desires, and he takes the quickest route to it, without minding anything else. Still, from as little as Asmodeus can see, Bun's directness is only in the way of medicine.
He watches Bun through the halflings, but learns little. They are terrified by pretending to be servants instead of slaves, and don't speak to him. It pleases Asmodeus. Little is more beautiful than a slave frightened by the very concept of freedom.
Asmodeus sees Tanidio's interactions with Bun through Tanidio's eyes, and is pleased. Bun's corruption is going well; it has only been a few days, and he's already taking advantage of the Security wizard who is supposed to protect him. A natural born tyrant, needing only a taste of power. There is, of course, a risk that Bun will not be corrupted; but he is no wizard, no adventurer, and Chrisor has no intention of teaching him. If he stays Good, Tanidio can kill him in an instant.
(There is something, around Tanidio's thoughts about Bun, that Asmodeus can't see very well. He suspects it is the beginnings of love. But Tanidio is loyal, and Chrisor is competent; such a thing will be stamped out in time, and if not Tanidio is only third-circle.)
Asmodeus sees no reason to focus on this project any more than he focuses on any other large Chelish infrastructure project, such as building roads. He wants His country to be strong and cruel and beautiful, yes, but the humans can do infrastructure perfectly well without his interference.
Yes/uncertain.