Oh, I'd say most of us are quite taken with the story and are fine with the visual novel approach. Let's face it, most "games" with spicy content only contain dumb, boring, repetitive minigames to waste time. I can absolutely do without those.
As for HH in general, I would like to see a "travel agent" overlay with markers who is where when. I'm thinking of A House in the Rift here, which I find insanely helpful and quite frankly, the step by step "traveling" to get where you want to be is getting tedious, especially since the expansion of the city, but also inside the hotel it gets tedious.