Honestly, it's very interesting to see you discuss the technical aspects of AWH, and Renpy in general. I know practically nothing about programming, I could probably figure out based on what games use which system what each engine was designed for and excels at, but beyond that...
Renpy has been a lot of fun to work with and learn. I've spent just over two years with it and (at least I feel like I have) come a long way from where I started with it. While it is great for making VNs, it's weakness is that it can't do much else. Again, yes, technically you could make other games in it, but you'd really be making them in python and using Renpy would be an odd choice.
Still for anyone interested in making this style of game, I think Renpy is a good starting point. There is very little programming knowledge require to get started (python is mostly English with some extra rules, and most of the time you aren't actually writing code-code), and there are lots of good examples out there (not many great tutorials that I found, but I haven't looked for a while). Since it is all in plain text (vs Unity or Unreal, that code requires disassembly to read, and is then in C# and C++) opening an existing game to see how someone did something is very straightforward.
Anyways, so, now that you have a definite answer regarding impregnation in the Unity game, what does this mean for impregnation in AWH going forward? You've been pretty up front that you intend to have it in the game at some point, so how does this affect your plans?
The short answer is not much of anything is going to change. In fact, Ferdafs not adding it makes it harder for me.
Here is the main problem: future story.
At the end of the day, I am still adapting Ferdafs story. Yes there are changes, and additions, but the main events are still very similar. I still need to be compatible with future story and future scenes. And there are two ways I can accomplish this:
I can keep my additions/changes minimal and flexible, able to work with whatever comes next (or at least hope I can).
Or I can know what comes next.
(or, or, I could make my own game, which is way beyond the scope of this project. I don't have the art ability to make that happen... (Also, this project was never meant to work this way. I'm not working full time on this game, I have a job, I do that most of the time, and this was just a for fun thing to do in my spare time (which hasn't worked as I planned and I'm spending a LOT more time on this game than I should be)))
Pregnancy is going to be current (or very close to current) story. Now I'm writing future story, I'm pushing forward plots that I don't know how or if they can tie into new scenes. And that is where the hesitancy comes from. Again, I'm adapting someone elses work and that comes with many limitations as to what things I can confidently move forward. I don't have control or knowledge of where the game is going and every time I advance story beyond where it is, I run the risk of it not working with new content.
Yes, I have my own plans of things I want to happen, and stories I've setup, but those have to be very flexible to fit inside of what Ferdafs is doing. And pregnancy isn't very flexible. Once we start down that route, there are some big things that need to happen. There are some major tone and character changes I'll have to address. There are big scenes that will be part of that plot.
And adding complexity onto that, there is timing for players. If a player has been cumming inside Summer from the start and get the pregnancy talk, no issue there. But what if a player only starts cumming inside her after that scene? Now there needs to be a second scene, or does the first scene play again? What about all the story related to her being pregnant? Or what if Ethan gets her pregnant (in the Unity game) and that becomes a major plot element? How do I reconcile that?
This is the main issue here, pushing beyond what is known. And if this was a separate game, not dependent on Ferdafs version, no problem, but it's not.
This isn't a line of dialogue or an extra/edited image, this a HUGE game branch, for each character. And now I'm making my own game, needing artwork for it, and large dialogue sections. Again, vs the main goal here which is to update every 2~3 months and keep it up to date with the Unity version. This is a for fun project that is by no means a full time job (though I keep putting in way more hours on it then I should be).
So... the short answer (too late), is that, for the moment, my plans haven't changed. Yes I want pregnancy (as an option). When I can safely do that and make it fit in the game is still a big, I don't know. For the moment, I can't see a good way to fit it into the current story that doesn't make things a huge mess.