I am a retired Naval Officer with 26 years of service. I don't know what a "briefback" is (must be an Army or Air Force term), but I have had to do countless briefs in both verbal and written fashion. I have attended numerous joint service schools, and in every one of them, brevity and clarity was stressed in those schools (and I never once heard the term "briefback"). Say what you're going to say in the most concise, clear manner that you can!
The OP was seeming to say that his post was so long and detailed (? I didn't read the long post, so I don't know for sure how detailed it was) because of his military/government background. I'm saying the military doesn't teach one to endlessly ramble on in their written efforts.