@moreteaMine are more focused on the underlying relationships, and why they work as they do. As I started here in order to provide a more realistic harem story, so it's much more about the character development than it is 'adding the next lay' to the list. But, that's just me.
In short, focus more on the longer, plot-centric, stories, and less on the short straight porn stories.
Like in my post-apocalyptic series, it focused on how everyone reacted to each death, as a reflection of how they'd inevitably respond afterwards, when they're utterly overwhelmed with personal loses and trauma. So, by focusing on the individual relationships, the story was much harder to read, as each individual death felt like your own trusted friend's death, yet because of that, even those who could finish the story, were more than happy to devour the sequel, because they cared so deeply for both the characters and the character descriptions.
As they say, you reap what you sow, in this case, you sow what you reap? (i.e. you have to care about the characters in order to care whether they live or die.
And very few people are suited for a multi-partner relationship, and the whole 'free-love' mindset never played in the '60s and '70s when the term was first coined and it doesn't work today, unless you properly set it up first.
But, my stories are too varied to list them all, and I've actually removed many of my classics (i.e. they're officially behind the SOL paywall now).
I've always been more of a details person, so I like to dig deep into my characters background, so readers can fully comprehend why they act they way they do, as otherwise characters are simply empty figureheads moving around in a stage.