To settle the debate, the initial plan for Lily and Haylen was to keep them "pure and untouched" in the endings if their quests hadn't been progressed past a certain point. But that was before I had to do a part.2 for HC3 due to the engine's limitations.
Now, since part.2 assumes every side quest for Haylen and Lily in part.1 has been finished, it would make no sense to ignore their level of corruption and act like nothing has happened in the endings if people haven't done their 2 last side quests in part.2.
So, even if the SQ of part.2 haven't been finished before the endings, I'll probably act as if stuff happened in the background instead. I might add a few differences here and there, we'll see.
As for HC4, I want to keep 2 side girls same as HC3, but bring them into the main quest and make their content feel a bit less important than the main girls. At least, that's the plan currently, but it could always be subject to change.
Now, since part.2 assumes every side quest for Haylen and Lily in part.1 has been finished, it would make no sense to ignore their level of corruption and act like nothing has happened in the endings if people haven't done their 2 last side quests in part.2.
So, even if the SQ of part.2 haven't been finished before the endings, I'll probably act as if stuff happened in the background instead. I might add a few differences here and there, we'll see.
As for HC4, I want to keep 2 side girls same as HC3, but bring them into the main quest and make their content feel a bit less important than the main girls. At least, that's the plan currently, but it could always be subject to change.