It looks like the content on that site is really just plain, static text. It would be nice if it could be read without requiring the user's browser to allow javascript.
I thought it was a plain text document. My JSON reader browser extension was preventing MarkDeep to render for some unknown reasons.
First, let me say thank you for your efforts towards making DNS more accessible for implementors. Could you elaborate on "CNAME chasing to other zones: let’s not" and "Adding glue from other zones: let’s not"?