Easier to navigate on a mobile device. Though, I wouldn’t want to simply set up the site for mobile devices. I’d like my site to work well on both mobile devices and computers.
The strength of Sandvox is its ability to easily "contain", navigate, and present ("play") multi media content (slide shows, mp4's, pics, anim gifs) that are mostly made with other apps outside of Sandvox. It cannot, of itself, create code to build path animations, hide/show content, etc.