All I can say after playing the most recent version of this game is WOW. A little over a year ago, I thought I wrote this game off as something I was definitely not interested in. I decided to give it another shot, and the improvements really blew me away. I probably would have put this at about 2.5 stars before, but now I'd give it 4.5 easily. The quality of the standing portrait art for the characters is seriously night and day. Comparing Tiffany or Ryoko to older characters like Clara or Becca is a huge difference.
I actually would go so far as to say updating Clara, Becca, and the teacher's art would help retain new players, because they are who you see most in the early game. I almost put the game down a second time because they just looked unappealing to me, but I'm glad I stuck around for Priscilla, Gerda, and Clara's later story. For Becca specifically, I think she has three main problems. Her hair looks a little too flat and greasy, her face has a strange expression and red color, and her fat is too pronounced. I mean she has visible fat rolls, which I don't think is appealing to most people. I think something like Jessica's body would be preferable for Becca, where she's obviously curvy but doesn't have a big stomach.
I also think the improved tone of writing helped a lot. I noticed comparing the mom's story to, for example, Clara's later story, there were some pretty large differences. The MC is no longer a heartless deviant, who rapes his mom in her sleep and tries to destroy her self confidence through her weight. He actually cares about the ladies, and the dark stuff is more sexual rather than mean-spirited.
One more thing I like is the use of the standing portrait arts to be sexy. Scenes aren't everything. For example, seeing Gerda in the bikini and Priscilla in her no-bra mall outfit were probably more enjoyable for me than another scene would've been (Especially with their puffy nipples visible). All in all, this game's really good compared to what I expected. At this rate, if the future updates resemble Priscilla/Gerda, it will be up there with some of my favorites like summertime saga.