Yeah, I’m also considering moving my notes to Obsidian. Besides the .txt notes I also have for instance .taskpaper notes in my folder that are not visible in Obsidian. TaskPaper files are also basically plain text, with a defined format. I have other apps that work with the TaskPaper format better and I’m not asking for TaskPaper support, but it’d be nice to see them in Obsidian, maybe make quite edits and open in the default application for other uses.
For me at least it’d be great if there was a way to specify a list of file types that are plain text. Obsidian would show them in the search bar and give some very basic ways to edit them without the Markdown formatting.