I think Jame Eagan trying to make babies in whom he sees Kier is probably a good read. The baby in the opening credits seems to have Kier’s face, which in a metaphorical sense is Jame’s goal. The innies are also “babies” in a sense, and Jame says he sees Kier in Helly R, so that’s another “baby” with Kier in them (although this one is a stretch because they’re more like adolescents this season). Third, I guess it contrasts Kier with Dieter, who spilled his lineage in the forest rather than procreate and pass it on.