I’m looking at some different ideas for how to handle this question. One thing from Kaga’s notes that are available on SF is that they had originally intended for there to be a different male child based on who the husband was. So I’ve considered implementing something like that, or perhaps changing the male child’s class based on the pairing. Another idea that came up was implementing branched promotions, which would allow potential fathers to access different classes that would make them more viable as parents in various pairings.
Gen 2 is a bit of a ways off, so I’m not really set on a specific approach just yet. Just kind of thinking about it.