If something like this happens, the images/renders would be treated strictly as an expansion. The game would still be written as a text-only game, and the images would be an extra. I'm sure people would be very interested in that, though.
Sarah will have a presence in the main story. Later on, choices will be added to decide how much of one. Not going to say much more than that, I don't want to spoil the story. As for threesomes, probably not in the main story. Maybe a short branch route where it happens.
I don't like using file hosts that require accounts. I can try using some others in the future, but I've never had any problems with these, but perhaps that's because I use an ad-blocker.
#1 where did you get confused about that? The non-technical/normal suit is her "training suit", if I refer to it differently that is because of the sentence/story flow, word choice wise. I tried to explain it in enough detail, without going overboard.
#2 I'll try to fix this, I tried being careful making such mistakes, but yes the scene where you do peek is basically considered the main route. I'll try to find where the inconsistency pops up, and rewrite that section. EDIT: Ah, probably in the conversation with Sarah at the end of the pool scene. I'll fix this for the next version. EDIT2: It has been fixed.
Thanks for the feedback, and glad to hear you liked the writing.
As for tomorrows update, it's probably going to be a day late. I'll try to upload three scenes this Friday, because I haven't finished them yet, so I need to finish writing them and editing them before I can release them. But I believe I will have them ready this Friday (This means releases will always be on Fridays from now on, due to only being able to promote my thread once a week).