Great that a full reinstall is suggested, which of course isn't at all straight forward... I have the same issue as above and around 20GB of offline playlists, which I'll have to re-sync, which you probably know is also buggy and a bad user experience.
I pay for premium for about 5 years now, but i'm considering buying CD's and ripping them for the future. What's the point of wasting time and energy on this.. Anyway, rant over.