I wish every wife option gave a unique child.

If you married Clarice you get a Sech-based daughter that looks like her mother with unique dialogie.

If you married Kanata you get a smig daughteru that is proud of her god heritage and talks about Auntie Rin.

Also give the child unique bond events based on their parents and such lioe Pilika taking her child hunting or Hina talking about her mom and bringing her kid back to show off to her hometown. It would carry the game further.