Given that the actual download files for Data Download expire after a short amount of time (which is completely logical), it would be beneficial to be able to know what objects were included in the data downloaded, and potentially any filters used.

The main reason behind this is from a security stand point, if an employee with access were to go rouge and decide to download sensitive data to sell/take with them, there is no way of telling what kind of data they may have if you were to miss the window of the backup being available.