My particular interest is restraint involving stress elements, so that images or video have a semblance of reality, even though they are all contrived. A “victim” needs to be slightly out of her comfort zone, so she feels helpless, and can’t help showing it. However, the second image above shows a woman tied from various angles, like being caught in a web, causing a nuance of confusion maybe, which l also find erotic. All restraint can feel good for the “victim”, and should, in my opinion; That’s when we achieve a perfect result, for both parties, and, hopefully, for observers later. I assume “elegance” means no penetration, which makes for a less pornographic image, and that’s probably best for the “victim” (model). But do all of your models not want some form of penetration?