That's what NTR happens in most real situations,and still hurts, right? Anyway, I think you mentioned a very important point. When I read some reviews of other NTR works, I can always see some comments like "Only having sex with one antagonist? Now it looks more like a real love!! There is no corruption at all. Come on, Why not let FMC have sex with that tramp / gangster / otaku?"
Personally, I think the quintessence of NTR works is the separation of sex (body) and love (spirit). "Since you are defeated in sex, in order to continue to live with her, you have to endure a third person's intervention in your relationship , especially this" third person "is still a villain who has repeatedly bullied you." This humiliating, distorted and irresistible experience will bring a great psychological stimulation.
But the premise of this relationship is that there is still "love" between MC and FMC. It may sound cruel, but if all the character traits that once attracted MC disappear, what is his motivation to choose to love her and live with her? Of course, you can say that it is out of a sense of responsibility, but perhaps as HC said, "if she's a slut, the NTR becomes kind of pointless."
So, I think the degree of corruption needs to be carefully controlled. If you don't think that "having sex with a group of men" will significantly weaken Laura's personality, that's totally fine. Even in some Japanese NTR Doujins, the FMC end up quitting their jobs, having sex with antagonist all day, going to brothels for prostitution, urinating in public, and even having sex with dogs.
But all those will be too much fall for me, and they are not attractive at all.