The Dashboard data is great for seeing patterns over a period of 30 days but if the period were extended it could provide other information too. For example, "how long has it been since a certain workspace has been used?" That would identify FME scripts that are no longer being used.
It would be easy to build something that would store the daily data better than the current CSV files, for example, a SQLite database, and then build reports off of it. However, I'm wonder if Safe has something like this in the works already?