I am making use of Large Media, primarily to present thumbnails and full size images - this works excellent to improve loading times of my pages.
However, the natural way to zoom into an image is to pinch zoom on a mobile device. It would be fantastic to be able to pinch zoom into an image, and that would reload a higher resolution image. This wpuld also be great as a better solution to, from start, select a better image that is sized according to the current users screen. I.e. load a “retina” image on devices with high pixel density from the beginning.
See one solution here: Responsive Image Resolution - Samples