The developers said the next update will circle around the main girls, it's interesting you recommend it this way with the main girls first and the side girls later, I can't remember a game that did this exactly like that, it's always the opposite.
Then look at the games in your sig. Most of those games either have no side chicks or start you on the path of the main LI's and then give you the side chicks. Even in Chasing Sunsets, the mother/daughter were left completely open ended like they were originally intended to be LI's and massive plot holes like that really upset people. Every side chick in BaDik? Introduced AFTER you've had a crack at 80% of the main LI's.
Side chicks in storytelling really probably shouldn't even be a fucking thing. If they were worth having around, they wouldn't be a fucking side chick. Right now, this game has about the perfect sized cast. We're talking about a porn game, so a random hookup is fine, but they don't need much if any character development or dialogue. You could give or take 1-2 characters in this story without destroying the pacing. The stories pacing really isn't the problem, it's the speed of the updates. People love what they've gotten, but justifying these long development times is getting harder by the day. You've got 3,345 subs with the lowest tier gaining access to the game being the $6 tier. Money isn't holding this games speed of updates back, so what is? In the case of Ocean and DPC, it's them being too stubborn to work with others. This dev team is at least two people. Maybe contracting another artist is in order. They make enough and would see a surge in subs if they showed more frequent updates.
How dev time is being spent has to be addressed, period (in EVERY VN). Every brief conversation doesn't need a couple hundred unique renders. Even mundane conversations have the renders progress like it's the most flirtatious conversation ever. Every time a character enters the scene isn't a justifiable reason to spend the next 20-30 renders looking them up and down. This game is visually stunning, but it's PRETENTIOUS AS FUCK. This is the sort of attention to detail that everyone would love if it were given to the actual H-scenes. It doesn't need to be given to every single fucking scene, though. It's dragging out the development unnecessarily. The render counts are sizeable, but the overall content per update is comparatively miniscule. They need to be covering like twice the amount of story/character development per update as they currently are. Go crazy on intimate scenes, but scale it back on the day to day shit so we can actually start progressing through the story. It's that simple. This game is reach the point where it would be more easily developed in UE5.