Version
You must be registered to see the links
from March is still the lastest repack yes. Not sure if much has happened since then, the attention of both devs and modders have most likely turned toward the new game.
Very, very unlikely to happen. As far as I understood, "simple" mods like additional items and settings are doable, but the new engine makes it much harder to mod the core game. And you're talking about a complete new function here, the girls don't even have a risky/safe days cycle or any lines related to it, so I'm not sure how that would even work.
I don't think HS2 has anything like it either, since there's nothing in the base game to support it.