Thanks for the feedback! I agree and have had some ideas for improving this - one of them being copy/paste and drag behavior where you could copy a selection in Rectangle Pro and paste it as prettified JSON in an editor, and vice-versa. The dot file idea is also one that I like - it's just a surprisingly large effort to "do it right". Making UI's for representing this complexity is kind of tricky, and what's there now is actually my first cut - something that I figured I would iterate on but haven't gotten the time together to do it.