This will be true for some other kinks too. I haven't made up my mind to what extent. Like I said above, I don't want to spend 2 months doing an update with 400 renders, and a player only see 60 of them cause there's too much branching. We'll see. If you played the latest update, you saw some sexual content that was not at all optional. This because it's highly story driven and crucial for the game. To do two versions of this would have taken too much time.
I played Haley's Story (and I could probably think of a few others with the same idea), and there they first made the made story, after that a few updates, added all the other branches. In the end I just extracted all the pictures from the .rpa files, to watch the other branches, to see if and what I was missing.
What I often hate is when I need to make a choice for one or the other, instead of getting points bit both of them, and choice if I want one or the other or both. And then because I have to choose between two girls, I miss half the contents of the other girl. On the other hand, I'm not really a fan of a big harem, of fucking around every girl without knowing who she is. So being able to remove the girls whose types I don't like, is a big plus. (So my preference would be if you give the right answers, you get all the content, if the wrong answers, you miss some contents).
You could however, just keep it in your back, and add those paths in the end, when the game is finished. First build it, and add those options in comment or so. And when you finished the story, you could create an update with a lot more variations. And yes, lots of people will have played it with everything, but there also will be a lot of new people, who play the game for the first time.
Or what I also saw, was in the beginning that you could choose what kind of game you wanted, so run through the game, or make a lot of choices.
All those options, are just programming afterwards (Of course keeping it in mind during development and rendering), and no need to add extra rending, and such. But it's just the question, what your preference is, you are the developer. If you like me care less for single minded MC harems', but more for the additional love interactions between MC's girls, making it a big happy family. Then I'm more than happy...