Interesting, I see why you want this option because you have separate schema for dev/test/prod version.
I guess this is something that has been mentioned in this thread (Development workflow//testing).
This is an important and useful feedback for our team @dacou.
I do agree that to make the experience with dbt more seamless, supporting markdown in reporting would be crucial.
I will add this to our backlog for future improvement. Thanks, Damien.