At this time I am not aware of another way to pull this figure outside of the pages workaround method mentioned or pulling the entire data set via API/DW/raw clickstream and calculating distinct dimension counts via a query. I believe there was a user request in the IdeaExchange for a variable distinct count view in a direct report that you could upvote to further surface to Product Management.
I work in publishing, and want to be able to report on the number of content items written over a specific period of time. I've figured out how to do this using ReportBuilder... essentially pulling all content UUIDs associated with a specific publish date (passed to a different variable), then using Excel's COUNT functionality to arrive at and disseminate these numbers. But I wasn't able to do this cleanly inside Adobe's web interface in a way that would allow other users to replicate it.
If I instead fired an event on every page view and used the UUID as the serialized ID, only the first event would be recorded, essentially providing me with a simple metric showing number of items created. Brilliant! Thanks *so* much JillsMatthew... whole new worlds just opened up in my head!
You can use a serialized event to track your unique page views. Use a UNIQUE hash value for each page as the Serialization ID. Depending on your requirement you can include date, month, week etc while generating the hash key