I'm not sure I entirely agree with you on your first point. Writing isn't like code in that code is like a complete system of logic. I think having ways to show

I'm not sure I entirely agree with you on your first point. Writing isn't like code in that code is like a complete system of logic. I think having ways to show how that logic is organized, using positioning (whitespace) and coloring of logical operators is a pretty useful addition, whereas highlighting parts of speech (which don't express a logical structure) isn't that useful.