I think you just volunteered…
Anyway, putting babies into a porn game is a quick and guaranteed way to be shut down by Patreon, so it will never be part of the unmodded game in any meaningful way.
Even without the Patreon concern – or, for that matter, legal concern – of having underage persons in porn, from a practical standpoint it creates a hell of a lot of work. Babies grow. Fast. So you are looking at adding images for every growth stage, potentially all the way up to adult. I mean, I don't think many people have games that last 18+ ingame years, but stopping the growth anywhere before adult
will look weird for anyone playing past that point. And that is
one baby. Sammy can have many. Are they all going to look identical? If not, that is more work right there.
Then, with the images taken care of, it is time to start scripting interaction with the baby. Again, different ones for every growth stage. Oh, and interactions between siblings. Which obviously must be different depending on number of siblings and the age gaps between them. Near endless permutations right there, if doing it properly.
And if you
don't do all that work? You are left with a mod that basically adds a line saying "you took the baby home", and then it is never mentioned again. Which would be pretty pointless.