I agree, but indie devs work on a different scale than triple-A devs, and H-game devs tend to make this feel even worse. I'll show the indie step list then the H-dev amendment.
How Indie Often Works:
1) Make assets for a game.
2) Make the game.
3) Recycle much of the first project's assets for a continuing story universe, because making assets wastes a lot of time and fans want a new game soon because they liked the first game.
4) Iteratively build your world per game.
What H-game Devs Tend to Do As Well:
5) The next game is functionally identical to the previous game to an uncomfortable degree.
6) Make sure the porn characters look different enough.
I feel like the dev of this game feels afraid of the success of KP being so big that the next project will fail in comparison. Do fans really want the same exact battle and edict system? It's hard to not alienate the fans you got by making a very different game, but it's very easy to make another game if you don't change much. I'm not sure how much staleness hurts H-devs, because dinosaurs like Koo*oonSoft have been rehashing the same borrowed ideas since Flash game days.
Correction: The dev's just wrapping up KP because they're not working on any similar game next.
Having Read the Progress Report Now (link):
I'm very surprised and pleased because I've become jaded to the bullshit of H-game development. The short of it is that Rem's not going to do anything remotely similar to KP, because they think life is too short and they don't care what anyone thinks so they're going to do something completely different for their own satisfaction. It's nice to see someone have standards, I practically couldn't believe anyone would set their standards as high as they should.