I keep all of my files synced on Dropbox across multiple devices. It has really been liberating to be able to pick up any device, even logging in on a shared device, and having access to all my files. I used Dropbox on my IPP 9.7 to access my files as if it were a hard drive. However, when I travel, I have to plan ahead to either download, or "make available offline" before I'm away from a good internet connection. Now, if Dropbox had the ability to take a whole folder, or directory, and make it available offline and fully synced, well there is my file system that was missing! Please please....this capability would really be a game changer for those rely on iOS for productivity.