Kisekae breeding. Take two kisekaes, average out all their sliders and colors, roll dice to decide which parent they'll get non-slider features from and add randomness (especially for breast size so they don't all end up with medium chests again), and a baby springs forth fully grown, like Athena. This might give interesting results with monstergirls from the challenge above.
If the parents have opposite sexes, genderswap one and then average them. Adjust your new character's sliders to look younger afterwards if you want, and give her a new hairstyle since who copies their parents' hair?
Custom dice:
https://www.wizards.com/dnd/dice/dice.htmColor blending:
http://www.workwithcolor.com/mm-color-blender-01.htm 