Well I pulled the plug, and purchased a Denon AVR X3300. Its better than the old Denon it is replacing (wife has wanted to replace that for a couple years now, so this is our Xmas gift to ourselves). It has built-in Pandora, SiriusXM, multiple zones, and a whole host of other features. I look forward to using Alexa to control it.
For the holidays, I’m gonna fake it though since I don’t have time to futz with new device handlers and smartapps. I have all 7 speakers (2 rooms) in one zone, and the source of the audio will be one of the Echo Dots playing Pandora Xmas music. That way the volume can be controlled via Alexa voice command. And my ‘fireplace’? It is an old iPad, feeding a YouTube HD fireplace vid (complete with crackling noises) to AppleTV. So for Xmas, the tv audio will not come from the Denon but from the tv itself.