Clarity, Brevity, & Sincerity

Focusing on Macrorie's excerpt from "Telling Writing" and combining his ideas of composition with the ideas behind "clarity, brevity, and sincerity" can put Macrorie's perspectives in a new pragmatic light.  As a teacher if I were to implement free writing with focus as a form to promote expressive writing, I would emphasize the students to try to keep their writing clear, brief, and sincere.  I think this starts to happen when a good writing prompt that uses certain words/phrases within it to ensure expressive writing, but I feel if even if the prompt is perfect "clarity, brevity. and sincerity" as a requirement of their writing will help to avoid Engfish entirely.  I think that this works in parallel with the  two part grading system that focuses on grammar and content.  As part of the grammar component the term 'style' is often used as an umbrella term could be broken down to these three elements.  I am not trying to take the ethos training out of composition but rather have a 'style' and 'voice' component as part of the grammar rubric.  If the students are told that their writing should always consider the most succinct and clear way to phrase things it will in turn make it more sincere by removing the fluff that ultimately makes their ethos less credible to the audience.
These ideas are still being formed fully in my mind, but this parallel kept jumping out at me during Thursday's joint lecture.  I felt, even half cooked, that they could elicit some form of response on the blog, and that's what it's here for.