Sure hope this game will tune down the NTR and Sharing aspects.
It will not. The NTR and sharing aspects of the game will be increased over time, not decreased.
Why can't you become more dominant?
It's likely that the MC will have the opportunity to take the dominant role with certain characters, or at certain times. At the very least, she will be able to take the dominant role with her sister's boyfriend. That much is known already.
But the developer has already made it clear that the real dominant character in this game is Kendra, so that's what you should expect, going forward.
Hopefully 0.5 will have atleast a scene or two with each character and maybe introduce someone new.
This isn't a realistic expectation. "At least a scene or two with each character" would come to between four and eight scenes, even if you're only counting the characters already living in the house. Then if you count Mia and Julianna and Kendra, it would come to seven to fourteen scenes. In one update? From this developer? As I said, that's a completely unrealistic expectation.
Alishia has already stated on her discord that the next couple of updates will consist of the continuation of the Nina handjob quest, adding jobs around the house for the MC to do to earn money, and Mia's arrival. So we're probably looking at three or four scenes per update, but that's just my guess. And, after that, Kendra arrives, which is probably three updates away, at a guess.
As for new characters, Moriah, the parcel delivery girl, has already been introduced, but only briefly, so we may see more of her soon, since she's going to be a prospective sexual partner for the MC. Sasha's boyfriend, Bailey, who hasn't yet appeared in the game, will arrive at some point. And Kendra has a little sister named Piper, who will probably be introduced when Kendra reappears, though I don't think that's been confirmed. Other than that, I believe that Nina has at least one more porn star friend (in addition to Jeanine) who has yet to be introduced.
So tempted to just make something myself that is close like this. Already have custom Genesis 8.1 characters for it.
Knock yourself out. When you have a demo ready, let us know, and I'll give it a try.