The Idea of taking Birth Control pills is quiet a good one, (probably it will put the dev in a hell writing the code i don´t know)
even it could be a added realism, That the MC has to pay the pills for all girls once a month
with the thing like it is right now it is ok, the option for Creampie is given and you have to take care (more of a game vibe) not to get a child.
So Dev has only to add the renders for the sex with the pregnant girls and it would be optional for the player´s acording to their fetish.
And obviously players on the NTR path will have less of a say on the matter.
Sorry I can not figure out what you impling in this statement (Did you mean that the "humilation" the girls beeing pregnant from other guy´s seed, is a must for those with this fetish ? or that the girls will take the pills so they don´t get pregnant ?)
Im playing the game from it´s early stages, and Love it in every way so Will go on plenty trust in you !