Would it problematic to add an option to invert the lineage line so that the female line is on the bottom half? I may be wrong but I think it's the universal way of doing it? The real horse lineage pages I deal with have the female line on the bottom half. You have that button in the upper right that allows you to change the lineage line look, maybe add another setting to it to invert the lineage line so that the female line is on the bottom please. Thanks for considering.
An example of a lineage line from Pedigree Query. Dam on the bottom half...