It would be useful if the Desktop client had a Properties (Windows) and Info (Mac) option on a folder/directory to be able to tell how much data and how many files/folders are ares contained within it including details about online/offline files. By knowing how bit a folder is you may decide you don't want to make the entire thing offline. If Filr is your only "client", you have no other way to determine how big the folder is until you download the whole thing - then it might be too late.

See for a related idea.