So it does look doable. I spent just a little bit of time with the quick POC and can view the data file contents. With that I can probably update it to write contents, you can add other tools for scanning, etc.
I have a side project for BBSing (several at the same time so the one I'm about to mention hasn't gotten any love in a while) called Mystic Manager which has all the tools I wish Mystic had out of the box. Things like Theme editors, color editors, etc (since I can't get Mystics global color theme settings to work, and hand updating them is SO tedious), a prompt editor to edit prompts (since there are so many of them, trying to edit them in the UI is torture).
I created a "Tool" for data file management, which now just has the ability to view data files, but wanted to try it out for you since I was already at the keyboard. Anyways, here's a screenshot of it:
https://imgur.com/a/25yYHsa
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--- Mystic BBS v1.12 A48 (Windows/64)
* Origin: The Boneyard @ boneyard-bbs.com:8073 (SSH:8074) (21:3/248)