Greetings!   After encountering a string of repeated off-line content loss on various devices, due to the 3 device limit, I would very much like to propose the idea of adding a "LOCK DEVICE" function.    Essentially, I would like to be able to go to the "Offline Devices" section of my account settings and click a "lock" icon that would simply prevent a given device from being unsynced.    From my recent experience, I had my Linux PC, MacBook Pro and Galaxy S4 all marked as offline devices. The smartphone had an extensive amount of offline playlists. Then I get a tablet device and install the Spotify app.. Suddenly POOF! I get a sync error on my phone - all offline content is gone. Currently manually re-downloading playlists on S4.    I don't know, maybe it's just me, but I would GREATLY prefer if my mobile device was prioritized to never lose sync or offline content. If not possible, then I would simply like the option to lock my Offline Devices or the entire list.    There just seemed to be little warning, aside from the sync error, which defined the extent of the monotony I was about to unleash on myself.   Thank you for any consideration this receives - I sincerely hope the impact v. effort is weighed favorably on this! ... View more