Speaking of high heels, I say what I think in two versions. As far as photography is concerned (as I have already said, as a hobby, I have been dedicating myself for years to female nude photography, even with a discreet success :-)), high heels are an important part because they slender and lengthen the legs, giving attractiveness and charm, especially in the case of sandals, with uncovered toes. Combined with lingerie, stockings and suspenders, however, increase the erotic part of the photo too much. Every part of sexy clothing, added to the nude, increases the erotic part, so I tend to avoid any additions. The nude, even explicit, must be art and, when it is well done, it must not be too erotic.
As for play and sex, actually high heels in sandals with bare toes, I consider them as sex accessories, because, in any case even in bdsm games, they force you to keep your legs stretched out. In addition, a small rope can be knotted or fastened to the heel to keep the legs in the desired position, without fear of leaving marks ... :-)