Like @JBento said, this has never been a detective game, and the plot has never been about solving crimes or the like. The plot exists only as a vehicle to create certain scenes with the LI (and “amusing” scenes she thinks of, like the slapstick bullshit of the blood drive that could’ve easily been remedied without resorting to lunacy), and will be dropped or change on a dime in order to create other scenes she wants to write.
In reality, the entire series is basically a single romance story stretched out over the course of seven games, with a few romance “moments” per game. The plot is basically inconsequential, only existing to create the moments she wants to write. B3’s sole plot point was the auction–the path to it was disjointed, poorly paced, and often nonsensical as hell, but that was the main “moment” that had to happen. B4’s sole plot point seems to be the ball and whatever happens between the MC and LI there (most likely, it will be A’s turn to shine and will finally give in to being in love with the MC).
So yeah, the focus of this series has never been–and will never be–on investigating and solving cases. The reader is handed all the answers on a silver platter fairly early into each game, after all. And, really, it’s not even about the MC, since all of the personality stats are used so infrequently and flat out ignored to pain the MC as a UwU tween doormat. Instead, the focus is on the slow-dripped romances, introducing all the species she wants to show, introducing a new team each game (that we never see again until the end of the series, probably), and showcasing all of the characters she’s invented.
UA was just a nice change from UB. They actually acted like real people with brains, at least in the short time we saw them.
And I would’ve been all over Shawnie had she been male. Instead, I went for Farro (and Sergi, in another run, though I wish that romance could’ve happened sooner). Barbara is awesome. I’m looking forward to the vampire game, too.
In your defense, writing your game isn’t your full-time job. Considering that, I think you’re doing great with your progress. I just need more Lance. 
