I hear you loud and clear on how ntr & non-ntr can lead to a subpar experience. Being totally aware of this is the first step in avoiding the problem.
You seem to have a good head above your shoulders. I have a feeling you will make a great game.
Netori is in the game. What you described is the fun stuff I have planned for the alpha male MC.
I need to ask you more questions if you don't mind, since the game is focused on catering to your playstyle.
When you seduce the wife away from her husband, would you ever:
a) fuck her in front of her husband to crush his soul and destroy him
b) adhere to the husbands request to fuck his wife; he literally asks you to, because he knows you're the better man and you've cucked him cuz he's such a loser, so you guys setup a deal once a week where you fuck her in front of him
c) fuck his wife and daughter in front of him while he jerks off
d) fuck his wife and daughter, record it and send him a video
e) host a party, invite the husband and wife, then have all your buddies fuck her, while you fuck her too, while the husband watches?
Are any of these things appealing? Be brutally honest.
Netori is a very strong fetish of mine. Before I answer your questions, I want to let you know that the reason I love netori is probably because I like to have sexual pleasure while taking advantage of someone. I believe this is the case because I also like mind control, blackmail, rape and stuff like that which I'm ashamed of to admit. In netori, you are indirectly taking advantage of her husband, and, when she is kind of showing resistance, you are taking advantage of her too, so you are taking advantage of 2 ppl at the same time, which is awesome for me (yea, I feel guilty and trashy do admit it). Netori without her being resistant is not exactly bad either, because of the feeling of superiority that you have over her husband since she chose to fuck you even though she is married.
So, to answer your questions:
a) I am into taking advantage of ppl while having sexual pleasure, but I'm not exactly into making them suffer this way. I like them to cry because they are being taken advantage by someone. Although I do like to slap the woman face for some reason, torture does not really arouse me much, and this item is closer to that. But this does not exactly turn me off either, and since this route appeal to ppl that have the torture/sadist fetish, you should probably put this type of content on this route.
b) This does not arouse me much because this does not trigger my "take advantage of someone" fetish.
c) Imagining this arouse me for some reason. Even though I'm not taking advantage of anyone, I feel that I'm fucking a whole family at once lol
d) I would not send him the video. I actually prefer to do things behind his back and secreatly contemplate the fact I'm fucking his family behind his back when I see him.
e) If you are going to do this, I would recommend to make it optional as this has the potential to trigger a NTR bad feeling. I'm ok with her husband fucking her but letting other ppl fuck her is another story. She was already his from the start. She may be fucking you because she is being forced to do it for some reason (triggers the "take advantage of someone while having sexual pleasure" fetish 2 times) or because she thinks you are superior to him (tiggers the feeling of superiority).