This tropes you mention are, in a visual medium (PORN) a makeshift solution, a inevitable solution.
Trope = stereotype, cliche
Plot devices as: in the meantime or transparent walls.
Visual medium = Film, Videogames or Visual Novel.
This Stereotypes are blunt but necessary tools.
The quest is which master holds your oath, AVN or AN?
Quest = Question, sorry, my bad.
AVN = Adult Visual Novel
AN = Adult Novel
What is your goal? Are you creating a porngame or a trashy book.
In the moment only one thead hat a visual payoff.
Create two or more plotlines, but reward only one, is unwise.
To NTR itself, is it the play of ruin.
Zentral genre point is collapse, individual and social collapse.
The MC is not a avatar of the player, he is a crashtest dummy.
The player is not in character, he is a observer. Empathy not coping.
It is not the player bond to a chair in a dark room, were the last scene and collapse of the building is a black screen.
Filming the collapse of a dark building by placing the camera inside.
Art critics will love it, but art critics dont buy.
It is a highspeed crashtest in spotlight, filmed by 360 grade cameras for 3d and slow motion.
Crashtest high-level filmed.
A ballet of aluminium, plastic and steel.
Car crash in slow motion.
The Dummy liberated from gravity, frozen in time, gaze into his doom in wait of his last touch.
Dummy in the moment of the collision.