IDK, i'm fine with the direction the game is going honestly. But if this game had the ability to make more daughters (since you can get pregnant from everyone in this game) and have more incest content it would be amazing.
I have to wonder how that would end up. In the two current pregnancies that actually result in something (Cub & the mandragora) they seem to look more like one of the parents with some minor changes. So if the game gets to the point where nearly everyone can impregnate Minx, she can impregnate everyone else,
and every resulting pregnancy results in off-spring to interact with, you're probably ending up with a bunch of lookalikes and getting like, 15 different girls that all look similar to Minx & Cub, or a mini-clone of the NPC but with freckles. Otherwise Fluxcarnal has to try and come up with more "natural" designs for every possible pairing. Either way would potentially lead to less dev-time for other parts of the game, like completely new & unique non-offspring characters (and that would mean less new girls for potential pregnancies.)
I personally think the "main focus" of the game is the non-human/monster dickgirls, but there's still a lot of diversity and variety in the game's other content or "subgenres." You've got pregnancy, TF stuff, lactation, incest, some S&M content, and even more fetishes/kinks/etc. This variety is (in my opinion) the game's best feature, so keeping things simple and making sure all of the game's "subgenres" get more and more content over time is probably the best way to handle things.
Of course, I can't speak for Fluxcarnal. If they decide they want to focus on more of [insert fetish here] versus the other stuff, it's their game.