It would be awesome if there was an option to show un-synced files and folders. Perhaps they would be greyed out or have an "x" on the icon. This would allow me to see files I have removed from my computer, but still live in the could, without me needing to go into a web browser to see them.

Perhaps there could also be an option that if you clicked on that file it would prompt you to see if you want to download it.

This could be an optional VIEW feature, not engaged by default.