I'd like a feature that allowed me to mark a series of posts as 'classified'. This would allow me to journal a post or series of posts that I'd like to keep private for a time, but may wish to 'de-classify' at some point in the future.
The use would be for moments in life where you want to write about an event, but it isn't time to publicize it yet. Marriage proposal planning, career change planning, early pregnancy events etc. are ideas that come to mind.