I want the tool you're building! It's got huge overlap with a project I was just in the planning phase of, a cloud-ified FreeMind. However! There's one fatal

I want the tool you're building! It's got huge overlap with a project I was just in the planning phase of, a cloud-ified FreeMind. However! There's one fatal-for-me flaw in your current implementation: only three layers deep. Deal-breaker. I'd love to hear about it if/when you change that behavior, so that I can start trying this seriously. I saw your comment about future possible options to self-host, or offline mode, or something like that. That's definitely interesting to me. Self-hosting would be ideal, really. But I also very much like having the option to use your servers. When you mentioned exporting to Markdown, you mentioned breadth-first. I'm not at all sure that you want breadth-first. The documents I'm imagining writing will make more sense exported depth-first. I think it would benefit from a little visual cue to see where one card ends and the next begins, even for cards not currently selected. My first attempt would be to let the grey background show through the white cards, but whatever. I agree that the default text size is a bit too big. Maybe some scaling could be added as an option when configuring a tree.