Currently all the files in a synced folder are stored on all connected computers. This could become a problem, if one of these is a laptop that doesn't have much storage space on it. If an interface could be implemented, that would allow users to pick which file(s) to store, it would prevent the computer from filling up with files from the shared folder. A similar feature is already done on android app, because usually handheld devices don't have much storage space. This would also allow for quick file retrieval from a sync folder on any computer, that doesn't have the full folder synced.