I think the topless scene would have made more sense if they were at a private resort. The fact they are there for a conference would mean the area would be swamped with people and it's only through VN logic that they appear to be alone (assuming your MC is peeping on them from the patio). Otherwise I think it's fine. Allison absolutely has a wild side and it's just been repressed due to her professional life and deteriorating marriage. I brought Allison, Jasmine, and Natalya, so I'm not sure how it places out in other pairings yet. I'll probably wait to go harder into other routes when the Steam version releases cause this version has some bugs to take care of like missing images.
I actually like Alexa a little more now that she has more backstory. I also thought the threesome was one of the better scenes. I think the event manager and waitress are set up to be side content or later side content but I'm not super interested in them tbh, main girls are carrying the story pretty well.
As someone who is divorced and has an amiable relationship with my ex, I feel really connected to Allison. Every time he takes her advice and she just has that shocked "Wait, you're listening to me?" look, it's a real win. Still can't give up Jammin though, if there was a Jammin + Allison combo I'd be all over it even though it really doesn't make any narrative sense.