I get that maybe at first the girls wouldn't be comfortable with hard or soft BDSM,but you could just make it so you have reach a really high level in specific girls stats(min this case probably trust)before they're willing to try it. IMO,just because if BDSM might be in the game,doesn't necessarily mean that the romantic feeling has to go away,in fact it could enhance it because despite the fact the girls have been through shit, the fact that they trust the MC enough to let him do it is romantic in itself. Could be shown as a significant step in overcoming their past and not letting it rule them. But I understand why you might not want to go hard on that because all the harem girls are traumatized and that can get dicey story-wise when you're adding in something like BDSM.
Like I said, proper BDSM no matter how hard or soft it is as a concept is based around love,trust,consent. That's why subs having limits and safe words is one the core driving factors. And honestly, given your own tastes,you'd probably be able to actually portray BDSM unlike a lot of mainstream shit cough*Fifty Shades of grey*cough.
But if you don't want to do it for LA,then that's fine, but it's a bit disappointing as good BDSM portrayals are already hard to come by in other media, but it's especially true in the AVN space. And in LA's story it could've fit as a somewhat core thing,instead something that's half-assed just for obligation like other AVN.I do still like game though,don't get me wrong.My taste lean less towards vanilla,but it's nice once in a while to play something vanilla.
So it won't be in LA,but is that sort of thing is off the table for future projects?