Hmm... well I have an idea for a specific scene, mostly because I think the Witch needs more screen time, does that count?
Basically you arrive at her house at night (late night maybe?), and she invites you in because she wants more spell reagents (so she says, she may just like the taste) and starts flirting with the MC. Your first choice of the scene is to either "Let her continue" which will lead to a similar scene as the first encounter but more elaborate (fellatio, boob job, etc) and ending with getting several samples (in her mouth or on her breasts/face) and the MC leaving at Late Night. The second option is "Kiss Her" which has him grab her and proceed to do so, hard and deep kissing (intense, lots of tongue). She struggles a bit, but soon gives in and returns it. This leads to actual sex which can go into several directions with multiple options (missionary on the bed, doggy style against the wall, lotus, etc. with optional degrees of gentle or rough), cumming in or on her, etc. Afterwards she and the MC are having post-coital cuddling in the bed and she's complaining (content may vary depending on the act and if it was gentle or rough), he laughs and says she enjoyed it. She just blushes and doesn't deny it, staying silent and hiding her face. She does get her sample in the morning with a wake up blowjob. Like the elf, once unlocked this scene can be repeated.
Just a fantasy I hope to see in the game someday.