Good question.
I’m a writer – I write articles for my employer’s website. I gather Office documents, web pages, PDFs, and probably other document types in my research projects.
I take notes on these documents in markdown, using Obsidian.
I create a MoC for each project, linking to and briefly describing every document involved in the project. This includes all those Office documents, etc., as well as my Markdown notes and article drafts. The MoC also includes a timeline of status updates, so I can see at a glance what state the project is in at any given time.
I also store all the documents for each project in an individual folder. Redundant organizational systems are helpful!
When I’m done taking notes, I write my article in Markdown, in Obsidian.
When I’m done writing the article, I output it as a Word document, using the Obsidian Pandoc plugin, and send it on its way to my editor for his review. We do a couple of drafts that way, and then send it out for internal review and sometimes for review by partners or customers as well. Every step is documented in the MoC, and every draft is saved in the folder, with links in the MoC.
As to what problem I’m trying to solve: I want to keep all the documents together, and have a MoC that describes them all briefly, and provides a timeline of work on the project.
The way I’m currently doing it seems to work, but I worry about mixing all those document types in my Obsidian vault. Is there a better way? Is there a possibility that I will run into an unanticipated problem down the road?