Point taken about HD subs being used as a pretense to launch FM analog translators (thus avoiding ownership caps in many markets.) SO clever. :
But I'm going to dissent on your point about Clear Channel Media and Entertainment (no longer CC Radio) seeing "merit" in HD per se. That stance is a little hard to reconcile with corporate directives retracting the HD companywide mandate, allowing local management to turn it off at will. I think it's more a case of the company wanting to look like they're not dumping HD, while at the same time quietly edging toward the exits (after all, the new corporate name indicates CC sees its future as a "content provider" as opposed to a custodian of terrestrial transmitting plants. That plunks HD Radio in the long-term irrelevance column, since there are existing, more cost-effective digital platforms without HD's vexing problems.)
There are still no radios. And reception issues. And no sales strategy. Absent dramatic solutions in ALL THREE categories, its long-term prospects are not good.