I would have wanted it to be a game mechanic instead of it being one of the endings.. If it was one of the game mechanics, it would elevate the kink factor of the game multiple times.. Try to imagine Alexia not only being bedded by Andras every time Rowan's away, but also impregnates her with his own seed.. Andras and/or Jezera could use magic to make the baby look human but only Andras, Alexia and/or Jezera knows the real father.. I wish Alexia can also have the freedom to choose who she wants to be impregnated by when her corruption level is high.. Alexia being impregnated by an orc in the dungeon or in the underground cave will be really kinky.. Don't forget Sil and the Minotaur blacksmith.. The possibilities are endless if the dev decides to make the impregnation, pregnancy and birth as a game mechanic instead of making it an ending.. That would probably attract more funding for this game too.. Seeing that it will maximize the kinky-ness of the game to a whole new level.. There's something about Alexia that gives her great potential as a game character and as an object of desire for the gamers..
So you want 5 to 10 different pregnancy arcs with the game's female deuteragonist?
Do you realize how fucking impossible that would be at this point in the game from a design standpoint?

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If the devs decided to do that we could all say goodbye to any other plots for a couple years unless they went the CoCII route and just yeeted the offspring into a nursery to never be mentioned again except as a stat-line.
Even if the game was purely catering to the NTR/Pregnancy crowd it'd take a stupid amount of dev time to do.
In AII best case scenario you get Andras or Rowan impregs, a mystery fate baby that pops out the womb the same no matter who you are fucking, or a Jesus baby. AIII you could have more branching.
Game is too realistic to have the deuteragonist become pregnant and it not consume a large swath of plot. Multiply that by all the different routes you want, the amount of time in the game we have left, and also include a non-pregnancy route b/c not everyone wants that and you're starting to have real problems.