Yeah, I think it’s best to create a precise feature requests for each, with specific discussion about what a user would need from that format. Since Obsidian can now be extended to use other formats, perhaps plugins will be developed to respond to these needs.
The majority of discussion on this thread is about .txt, and I am certain that the plugin I mention satisfies that need.
(As I suggested above, I think you’re looking for something different for .txt than the majority of users interested in .txt compatibility.)