Also about a tool being overly conplex. Something like find, imagemagick, ffmpeg,… are not complex in themselves. They’re solving a domain that itself is complex. But the tools are quite good the evidence is their stability where they’ve barely changed across decades.
ffmpeg does all things media conversion. If you don’t want to learn how to use it, you find someone that does (or do the LLM gamble) or try to find a wrapper that have a simpler interface and hope the limited feature set encompasses your use cases.
A cli tool can be extremely versatile. GUI is full of accidental complexities, so unless your selling point is intuitiveness, it’s just extra work.
Basically I have it sitting over the top of my notes and assisting with writing, editing, researching, etc.
I love obsidian for the same basic reason you do: it’s just a bunch of text files, so I can use terminal tools and write programs to do stuff with them.
So far I mostly use LLMs to write the tools themselves, but not actually edit the notes. Maybe I can steal some of your ideas!