They quietly removed shared link controls from Plus accounts (previously Pro accounts). Apparently customers already in Plus will keep that granfathered, but new customers won't. That's a feature lost, as if you decide to cancel and comeback, you won't get it back unless you upgrade. They have also negated selective sync to Plus customers, ignoring hundreds of comments on their forum.
The point still stands that if you have an account, and Dropbox was worth it yesterday, it's worth it today. Would be nice to get Smart Sync, but there's nothing you lost to make Dropbox less valuable then it was yesterday. (unless you were expecting your existing account to get Smart Sync soon?)