Finally got around to playing the new update. Here are some thoughts;
Jon might be the greatest porn game MC ever made. Not only do his intentions align with the player's intentions (It's mind-boggling how many games get this wrong, especially with male protags), but he is overall a good person, even given the circumstances, and good sense of humor. It's entertaining to watch him and very easy to sympathise with him. I'm tired of male MCs that are rapey jerks, or insipid self-inserts.
Overall, Sunny's story was entertaining from start to finish. But I do think it lacked some conflict between her developing sexual relationship with Jon. They were pretty much on the same page right after the first HJ scene. I would assume there would be rising conflicts keeping them apart, like their patient-doctor relationship, or out of respect for Leslie, but the writers quickly threw that away after she decided to stop being his shrink. And we just got escalating scenes after that, with no stakes.
Additionally, I don't think Sunny's arc had much ludonarrative significance to the gameplay/erotica. She pretty much had her internal conflict and Jon as a side-piece, but the porn and her internal conflict do not interact, unlike Brenda's storyline, which involved their dating to help her write her book. I think Sunny's conflict of anger, fear, and sadness should not have been resolved only with fights, but also with "sexual solutions." For example, we had some public sex scenes. I think they would fit her arc better if she were doing that to overcome one of her fear instead of simply being a date.
On top of that, the pacing could have been more staggered. Over half of the scenes happen back-to-back after they reach fourth base. We had a lot of great scenes, but unironically, a little padding between each of them would be for the best.
In conclusion, it was worth the wait. There is plenty of fun to be had, but I don't think Sunny's update reached the potential it could or used the "sexual therapy" trope to its fullest.