There's a lot to do, but I'd like to continue to get an idea for what addons we can focus on bringing to MM5. There's a lot of MM4 addons that are very old, but are still used regularly.
As for your other questions:
- I don't really understand what you mean by integrated playlist manager, because MediaMonkey 5 *does* have a ton of things you can do with playlists. Not sure what you're referring to that's missing from MM.
- As for pinning tabs, if you think it'll be a useful feature, maybe consider posting it in the Beta Testing/Bugs/Feature Requests forum, with some more details about your request?
- As for Spotify, I see the thread you posted, so hopefully we can fix that soon.