WHAT in this case is an ARM powered HTPC/console with OS
I honestly don't care for the ARM aspect of this debate, but pholosphically speaking, I agree with you.
The AMIGA 500 was cool because it was, basically, a console, but with the following perks: a keyboard, an OS, cool software for graphics and music, developing toolas and, for the daring ones, an hardware manual.
I think that this was what set the AMIGA apart, made it such a special machine and formed the condiiton for the rising of the "amiga scene", or whatever we want to call it.
I also think that, when Commodore was dying, it would have been very interesting if the Sony (or Sega or whatever) had launched its console with a keyboard, OS, RAM expansion, hardware manual, etc... most of us would have jumped on this hypotetical product in a second!...
(Eventually, Sony launched the "Yaroze" kit, but it was a costly joke, in my opinion...)
As for the birth of a new Amiga, I think Natami is the only hope.