The benefit may depend on your use case.
I use DT3 to store legal and medical documents I used in my consulting practice where I am a physician who reviews cases for attorneys in order to advise on the merits of a malpractice/injury case (or lack of merit) and the cost of future treatment.
Often I will send emails to my staff members or to my clients referencing various metadata in documents I have on file. The script as-is only lists the Name of the documents, but it will be easy to add in other metadata fields. Then I will be able to tweak the TE snippet so I can highlight multiple documents in DT3 and then in my email open on the same computer it will create a mini report with the name and associated metadata for each of the items.
Or I might want to make a comment in the metadata on various documents and send an email to my client which includes document names and my comments.
Another major use may be for citations/quotation of reference sources and associated annotated commentary that I organize in DT3 and then periodically need to add into my reports or email correspondence.
So basically it will be used as a lightweight custom report generator.