Will this game ever be completed? Maybe he should start the sequel after the next update, using the more updated graphics of the newest Illusion version of Honey Select. It's sort of ambitious, in the sense that it's become a pretty big "Sandbox" game with lots of characters, but I agree it has kinda lost the thread. I mean, you enslave your mom and sis within a couple weeks or so, and mostly you're just grinding to earn enough money to finish corrupting everyone else you meet.
I'd prefer a Ren'py remake of this, but I expect the dev probably doesn't have the rendering chops for that. Though maybe he could hire an artist if he needed to...