I just want to see both Ethan and Nat walking a fine line between their desires and feelings. It needs tension and drama for me to sit up and take notice. I've said it before many times but if it's just Nat following every whim of Ethan's wishes or vice versa I would lose interest with the story as its currently written. It also wouldn't make sense to me given how their characters have been established so far. Obviously the path you are playing will change a few things character wise. But still..
Ethan's character doesn't exude dominance over Nat, especially not sexually. So for Ethan to be the dominating force, guiding Nat at the snap of a finger - that would have to be established in his character...and I just don't see it. If that was his character I could see Nat being a complete submissive towards her husband and bending over backwards for his every desire, and that could make for a very hot story, but it wouldn't be compelling to me with these characters as they currently stand.
In that story Ethan would be revelling at the fact that he can watch his "slut" of a wife fucking other men while her focus is entirely upon him. This other man is nothing more than a sack of meat for Nat. A tool for her to show her absolute obedience towards her husband. Being a whore at his command is what turns her on. The man she is having sex with might as well be faceless. And Ethan's focus would be solely on his wife acting slutty and doing a good job for the sake of pleasing him.
Could make for a hot story if done with some nuance, but like I said it would have to be a different story with different characters to be compelling to me. The entire focus of the characters need to be shifted for that to work, in my opinion.
Ethan wouldn't even be considered a cuck at that point, he would be more like a pimp. Ethan starting to charge money would be an interesting plot development in such a story, especially if he does it behind his wife's back.
In the current version Darrel would be the pimp and Ethan would probably not get any money from his wife's side hussle.
Or would Darrel pay Ethan some royalty payment for the use of his wife? I doubt it at this point.