My comment on 'radar required" approaches is certainly dated, I was referring to comments published by Wally Roberts and the Jeppesen series of the late '90s. And I agree that approach at KDFW does have an intermediate segment, as drawn. Was that part of Chg 18? I know there were approaches at major hubs that were drawn with only a FAF marked "RADAR REQUIRED".
There were indeed a number of IAPs developed and published where radar was required and only the final approach segment was shown. LGA LOC 31 comes to mind. ALPA made a very strong case that vectoring to an unpublished segment of the final approach course not only violated the unpublished segment safeguards built into Part 91 (as a result of the TWA 514 1974 crash) it, in fact, turned them into psuedo radar approaches.
The design department of the FAA was overruled by higher authority and all of those IAPs soon were amended to include intermediate segments.