I can understand how shedding the more traditional NTR paradigm is a bummer for those who wanted that, but, as someone who just played this game recently and hasn't had any expectations build between updates, this feels quite natural to me. Not just natural, but expected, really. The game treats everything involving cheating with heaping portions of frivolity, and the tone pretty comprehensively lacks any gravitas. Aki never treats it very seriously, Jake doesn't, and the Holdcraft characters definitely don't lol. In fact, nearly every Holdcraft character has implied that they wanted Jake to get involved, and have expressed no interest in breaking them up, all of which flies in the face of the Netorare MO. Given all this, it seems to me that Aki was just the one who was more convenient to get at first, as she's the main character, and the game was always ultimately steering towards corrupting both her and Jake together.
Now, all that said, I don't know where things will go from there. Jake's arc of being imbued with magic and turning into a futa gives me the impression that (s)he'll become more sexually involved with Aki, Nichole, Elaina, etc, going forward, but who knows? Maybe it becomes a swinging/open marriage situation? Maybe Elaina and Nichole take Jake and Aki for themselves respectively? Maybe Aki and Jake become free-use toys for everyone in the resort? Maybe Aki's Kitsune nature is unleashed and she becomes even more of a sex god than Gideon supposedly is? There are a ton of fun directions the story can go without being contrived or overcomplicated, as some have voiced concern over. Personally I think the narrative has been very easy to follow and I'm excited to find out where it goes.
