Something I'd really hope for is an actual love plot in the interrogation gameplay. Kind of like the love mode in Imouto, where there's the usual stuff as the main game, but the MC and the girl are an actual couple and are flirting around and teasing each other before getting to the actual fucking. Depending on how you interact with the girl, you could have her reacting differently to what you tell/do, e.g. acting touchy and forward would render her hornier and more assertive about wanting to fuck you, while being careful and slow would lead to a more loving, tender and submissive girl that'd melt in your touch. No game overs for being too forward I'd say, just her not being as enthusiastic about the sex and letting you do your thing.