Dust to Dust comes to an end with all fugitive androids destroyed but not before experiencing debilitating emotions. The android hunter saves humanity, but we do not fully understand why he sacrifices himself to save the remnant of humanity. This is the main weakness of this story.
Dust to Dust comes to a point meant to be the beginning of full engagement with mercerism and electronic pets.
My expectations for this series were probably too high; to be a true prequel to Philip K Dick's masterpiece. A tall order and one that has not been achieved.