But who would buy it?
No one. Literally. Does it run PC software? Nope, then thats that crowd gone. Does it run PS/xbox/ninetendo games? Nope, no interest there then.
"so what", asks the potential chain-store buyer, "does it run?" Answer: nothing, because there is practically no software in existence for it. So the retailers will not stock it. Even if they did, the customer will ask the same question, get the same answers, and walk away.
A new Amiga is a pipedream. The market is limited to those of us who have an Amiga (real or emulated) and perhaps those with fond memories who could be tempted back. At best a few thousand, probably only a few hundred, and out of that how many would actually pay cash for one...
IMHO the best anyone can do with the licence is make a limited production run of "nice" classic Amigas, such as 68030 based A1200's, A4000Ts, and some "desirable" hardware such as 060 and PPC cards, Picasso IV cards, and scandoubler/flicker-fixers, for those who still need/dream/lust over such equipment.
Even that limited Amiga market shrinks year on year.
Or perhaps a Amiga PCI card, cram as much as possible on a PCI card (030/040/060/PPC, custom chipset, CIAs and floppy, video-out, and a gfx chipset such as Cybervision or Picasso IV used so the cgx/p96 support is in place). Would it sell, probably in small numbers. It can be done, look at minimig et al. Provided it runs classic OS, so the apps, games, etc are all in place.