On Mac, add overlay icons in Finder and thumbnails.
On Mac, with files on demand, you have no idea which files are local, syncing or in the cloud. One would think this is basic feature but no, not available. Also can you add support to preview files? Other cloud drive solutions have this basic functionality, I'm am surprise with the amount of basic issues that OneDrive and the Office apps have. It is just a suggestion, dropping Office 365 subscription due this kind of bugs.