I mean, that's kind of happening. After all MC is fucking the major's wife and will have sex with Kim's wife Liu, too, for example. Most people probably think of actual netorare when they hear NTR and until now there's no indication for that, even though the devs had perfect opprotunities for a proper buildup with the mafia/main story.
In the end DC seems to be a pertty grounded guy, so the rule will likely stay that "the good guys" like Harold, Erik, Earl, etc. will get a proper excuse/alternative while the bad guys like Dexter, the major, Kim, etc. will have to suffer a little more.
Nobody knows and recently it became even more unpredictable. But I wouldn't expect anything before mid january or so.