Hello there,
1. Glad that you liked the quest. The quest is yet to be completed as it will continue in 1.9
2. Vanessa is not ruined, and she will stay as a Futa. She serves 2 purposes; we needed a nun character and also a submissive Futa, so 2 birds with 1 stone. The dick looks the same as in other characters, but instead of huge, is more on the small side and big testicles to get more play on that submissive side of the character. She won't be un-Futa.
3. On the case for this specific game, the room is not really an important place, but yes, more interactions might come in the future.
4. The aim wasn't to make her a goth as a whole, but it could be thought about. Not a main objective and other more important things take priority tho.
5. There is no real endgame, the sex has been a thing even before she was the number 1 Starmaker, she has sex scenes at the studio with Mc, Ken, Josef, Mc, and Charlotte. While some places like the "Shack" are empty after the related quest and could be used for some random encounters, all the places you mentioned have content, that being sexual or dialog. Josef and Adrian will be in more content.
6. This won't be done, creating other maps for the weekends would be too much work or would get to the "places with just 1 interaction" comment. The only change to the weekend trips will be a solo route for Japan.
7. Astrid received some exposure this update, and the chances for her to receive more are not bad.
8. Charlotte will receive more content. Most of her content is sharing Anna with Mc but there's a chance she will receive solo content.
9. Celeste's quest does grant a lot of content in the big side of things, she serves as an antagonist to Anna that makes sure you advance her story and meet other character (Livestream - meet Toni, makes you work to get subs, and makes sure you cured Anna's depression), she also has a decent amount of content, not huge, but there's 3 scene variations at the amusement park and the 3some at Starcon.