AG, this is a brilliant letter and quite specific in answering the question they posed. Of course, as you already know, they have no interest in the answer. Only in being able to say they asked the question, in best bureaucratese passive voice. ("To the question, 'How Can We Improve This site,' we received 416 response which are tabulated in Exhibit A by subject, then ranked in order of usefulness...")
This is right on time as I just signed up for Part B and am trying to assess which way to go for Supplemental. My wife is 10 years younger and doesn't qualify yet. Any wisdom you can impart from. your searches is appreciated.