FINAL DECISION (WELL, NOT QUITE, BUT HERE'S THE BEST CANDIDATE YET):
When I finally completed the spreadsheet nothing jumped out at me.
Ayre, Hegel, Bryston, Benchmark, Devialet, Audionet, Chord, Pass Labs, Simaudio Moon were all near-misses. Every one was tempting, but none were a close enough fit. Didn't think this would be so complicated.
But now, one more contender has appeared: T+A's brand-new R 2500 R (not to be confused with similarly named products). Not only does this 31lb box do everything I need, but it includes a DAC/streamer that is probably better than what I'd buy as a separate. The DAC is an update of T+A's popular $7500 model, albeit with slightly lower specs, like only (!) 512K DSD. And the streamer even includes HDMI video passthrough for integration into a home theater.
If I was to break a cardinal rule & consider an integrated with an embedded DAC/streamer, T+A is one of the few companies I'd short-list. And at the risk of starting a war, I personally believe that combining a DAC & streamer in the same box is a better idea, all things equal, than connecting the two with cables and an external clock.
The R 2500 R offers about 200 wpc into 6 ohms, outstanding connectivity, and even a CD transport & FM/DAB tuner. Overall SQ (this is T+A, of course) is likely to be as good or better than any other unit I've looked at. It's been shipping for two months, has not yet reviewed in any venue I trust, and has already sold out at most dealerships. But I can wait for a product that looks as spectacular as this one on paper.
As I've mentioned, I can't get out of the house, but a colleague will be demoing it at AXPONA next week. So I should know more.
The biggest downside: $19K is way above my original budget. Still, all I would need to add would be cables & power cord.
Maybe I'll post a thread asking for any hands-on owner feedback. Assuming that there's anybody on Audiogon who actually owns one.