Some comments:
Syncing and Sharing are two separate things and it would be wrong to conflate them (yes, the original poster should ideally have made two separate feature requests). Imagine a hypothetical world where you could both sync and share a playlist: you could share a playlist with a friend, but the friend doesn’t have to sync the playlist content to a device - or your friend might have their own playlist that they sync to their own device, but they don’t have to share it with anyone. So, two separate things.
Elan’s question was about a hypothetical all-or-nothing playlist sharing (similar to how Allow Channels lets the shared user access all channels if the option is enabled). Imagine you’re the server owner/admin and you have 5 playlists (various music, movie, etc.) created. When setting up a share with another user, maybe there’s some kind of Share Playlists option and when enabled, the shared user has access to and can use a “read-only” version of all 5 of your playlists.
It’s also worth pointing out that the ability to sync playlists already exists with our newer sync technology. Yes, only iOS currently has that new technology, but we’re working to bring the same thing to our other Mobile Sync-enabled apps, too. (It’s a pretty massive change; it takes an awful lot of development work and testing for a change that large, which is why it’s not yet available on the other sync-capable platforms. We absolutely want to get that functionality out to users.)
