I didn't have time to read everything you linked to but this was to your point "One item to watch for is whether other entities will follow the Department’s lead and stop relying on the distinction between regional and national accrediting agencies. For example, many regionally accredited institutions will, as a matter of practice, only accept transfer credit from other regionally accredited institutions. State agencies, programmatic accreditors, and licensing bodies also sometimes require regional accreditation, as opposed to national accreditation, as a prerequisite for approval, accreditation, occupational licensure, etc., based in part on the perception that regional accrediting agencies are more prestigious than their national counterparts." So the DOE is changing their language but it's unclear that this signals any real change in attitudes or practice down where the rubber meets the road. They would like people to use the term "nationally recognized" but there's no mandate and there's no real motivation for the Regional Accreditors to shift their practice. I don't think there will be any meaningful change until there is a structural shift and (minimally) DEAC is subsumed by the Regional Accreditors or, on a larger scale, they are all incorporated into a single national accrediting body.