Damn, this has some great character writing. I knew after the first release that this had potential to be something special. That Eliza sequence was super hot. Cheating is a provocative subject, but you imbued it with some genuine emotions that elevated it above a simple porn trope. It was believable, and that goes for all the wide range of characters at various stages in their lives.
If I had to guess, the vision for this story is to keep it as grounded as possible while still delivering on the porn and the various fetishes when appropriate. I can understand why mom incest would be off the table if that was the case. Sister is one thing, but momcest is pretty much impossible to write for in a conventional way without devolving into full on porn logic.
But I'm with everyone else here lol. Damn she's hot. Maybe once you are done with the game, you could release a non-canon "What if?" or something. Anyways, keep up the good work!