DY: Do you agree that custody determinations and arrangements should strictly be determined by beis din in accordance with halacha (which obviously includes consideration of the children’s well-being) rather than by a non-Jewish court (which using it for this purpose is itself a violation of halacha) which uses non-Jewish law (which inevitably differs from Jewish law.) Once the beis din reaches a determination it should be given to the secular court as the parental agreed upon arrangement.
I’d also be interested in your response to the question I asked Avram above in my most recent comment to him.