Not everybody likes fanfic stories, and not everyone has a specific fandom they're interested in - but is there any particular aspect of fandom that you like? Are you a fan of smutty-but-realistic-to-the-original characters, or over-the-top-sex-scenes, or degradation and embarrassment or...what? There are plenty of fanfic out there of all stripes, so no judgement with regard to kinks.
I'm particularly interested in how you think fanfic should play out on a CHYOA level - what kind of interaction are you as the reader hoping to see? What kind of decisions do you want input on?
I do not look out for fanfiction actively, once in a while though I come across something that intrigues me about and old franchise or read/watch something new that literally begs to be subverted into erotica and look around to see if anyone has done it yet.
After having pointed out I'm not a fanfiction addict, I'd say if I do read an erotic fanfic, the first and foremost thing I expect from it,
is to resolve the submerged sexual tension among the existig characters, be it a canon ship or not.
The second thing is
developing existing situations of the original show/novel/whatever that could have easily ended with sex, that is if it wasn't a mainstream product.
The third is
to explore in a kinky way the perks of the world in which the franchise is set: there is magic? how does't that mixes with sex? are there specifical sex spells? and so forth.
This is about general erotic fanfic.
I really can't say what type of interaction I would expect though. I think it would really depend on the source material and the type of story.
What I do actually know I wouldn't, and do not in fact, like, are those kind of stories where there's a friggin' John Doe with 2nd person PoV that walks into the chosen fantasy world and proceeds to fuck every single female character, with choices being 'fuck her doggy or missionary'.
That is bad, just plain bad erotic fanfiction.
Everything above that, is a great improvement.
On the other-side, if it's 20-30 chapters of fandom character drinking tea and flirting with 1 sex scene buried among the threads, then I'd rather read/watch the original source material and then take a Pornhub break or something.
This also.
This has driven me off of erotic fanfiction for such a long time. It' still does sometimes.
One thing is to give your erotica a decent plot, a whole another is to go overboard and try to actually write a sequel of you favorite work of fiction.
I mean, I can actually understand that, but please don't try to sell it to me as erotica just because the main characters finally hook up and have a brief vanilla intercourse at chapter 87 and nothing more, geez.
I think most (erotic) fanfiction writers have this wrong conception that they have to be original at all costs but in fact is quite the opposite.
Fanfiction, as I see it, is a fanservice.
Just stick to what's already there, give it a nice kinky touch and voila, job's done!