I have! I think and so have others:

- http://nonelang.readthedocs.io/en/latest/dataformat.html#nak... - http://readable.sourceforge.net/ - https://github.com/boxed/indent-clj

Interesting, I should have been clearer when I said not just no parens, but also just whitespace instead of any syntax characters. The none language uses both () and "". Sweet expressions use {}. And indent-clj uses () and [].

I have had the same thought. I'm guessing, given how long lisp has been around. That the ideas is well research.