When we were just dealing with 2" tape, you could just about see what you had....and it was easy to just roll to a spot to see what is there....plus at least a legend would be on the box. I just completed mixing a project that was on hard drives (off of the new Euphonix R-1), good luck determining what and where stuff is...there is no room for a detailed slate sheet on the drive....documentation is a real bitch sometimes, and there is currently no way that I know of to standardize documentation. Maybe the new Producers/Engineers Wing at NARAS can eventually come up with a standardized way to document......as if anyone would actually follow any guidelines.
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