Something that I would wish to see in this mod, is a "pregnancy" feature where after you procreate, there is a time for the baby to develop, and have it rendered on the correct spouse

So you basically want another stage which modifies the appropriate villager's model in addition to the baby (item) stage and the youth (growing) stage?

Essentially, is this possible or not? If not you can close this
If it is possible, maybe make it configurable

I'm not entirely sure if it's possible. By the way, I'm not even part of the development team.

I get confused, we will see what the dev team has to say though. I have seen some interesting things pulled off with mods, and some things I though impossible

Seems like a good idea.

Definitely possible, yeah, but as for actually rendering it and making it look nice (not to mention fitting in with all 200+ skins in the mod) would be the challenge. We're not very good modelers, so it would be up to someone else to try and make the model.

@WildBamaBoy How do you do the female breast renders? They work with normal player skins. Could you implement something like that in the code? or how do you do that? Is it a render and the code adapts?

I simply request, if this happens, that the visuals and/or feature itself are able to be disabled via config.

This is no longer being considered due to required visuals.

Perhaps you should consider that it's entirely possible for two "males" to have a child in this mod. (See also the complaint about reporting same-gender parents as "mother" and "father".) Gender is purely cosmetic here, and attempting a visible pregnancy is an unnecessary complication.