About Adeptus being here reading some of our supersmartass ideas is definitely +10 in respect stat. Being close to your community is still the best way to know what that community wants. Anoter +10 - for participating and making comments.
I saw some number of autors, who thouth so high bout their projects that they took every opportunity to come and cry and throw tantrums with any mentioning of their games in every site that provide "no-paid downloads", if u know what i mean.
Even the most reasonable requests was thrown away with threats nd cries about piracy and so on and so forth.
I dont think I need to tell about how those projects ended. So if the author willing to listen to his audiency - I wish him the best results in his work.
Now about quest options. You see, if the quest has "yes-no-not interested" scenario - it is good, bot only for a short time.
If you have 10 quests like that, you would be bored to even start them. From player point of view it would be like:
NPC1: wanna fuck? y/n
NPC2: wanna fuck? y/n
NPC3: wanna fuck? y/n
NPC4: wanna fuck? y/n
....
VEEEEERY interesting, yes?
About darkest things they are into - its still complicated. Any moodbreakers should be avoided in overall plot, but kinks are okay. Fortunately, it is not yesterday when adult industry was born, so majority of mood brakers are well known.
Murder, dismemberment, heavy drama, and all that is creating dark and heavy emotions.
Buuut there is one tiny yet significant detail. Inspiration. If creator is really into something - he will create masterpiece. So if there is any preferences of author, that is in fact a mood breaker kink - it is good to make it, it just dont have to added in main plot - as a sandbox scenario maybe? Or maybe some on/off options in settings, but is is way harder.