I first want to give Barry credit for answering all (or most) of the questions. He did seem to put some thought into his answers.
The problem is, none of those answers really solve the problem of what his vision of what an Amiga is, vs what everyone here, and a large percentage of former users, think.
It can be summed up in this line he gave: 'I think of the Amiga as more a concept, rather than it must be this hardware or this software'.
I don't think that is the same, or similar, mindset to anyone who owned an Amiga in the past. I could use that same logic to say almost anything is an Amiga. My mac mini has a lot of nice features, it could be considered high performance and has a lot of entertainment value... is it an Amiga? I think my HP Touchpad is cool... should I just all of a sudden say it's an Amiga? You get the point.
Unless CUSA somehow gets around that licensing agreement, so they can either port AOS, or provide an OS with Amiga-like elements, I think they'll never get the support of former Amiga users. In my opinion they really should have never used the Amiga license without such an agreement in place first. They might as well just called their lineup Commodore PCs (which admittedly failed when Commodore Gaming tried it).
I wish I followed this earlier, as I would have added my own questions. But one key one which wasn't touched upon so much, but brought up briefly with FPGAs... why assume it has to be an expensive FPGA device? Why does CUSA think there is no market for such retro devices? They must be aware of Jeri Ellsworth's 'C-64 on a chip'. That is the way they should have went for their Amiga products (again, in my opinion).
As for Roms, I have heard various things. On the CUSA site they seem to indicate they will use the AROS rom. But I guess they could get around some legalities if they got a license from Cloanto instead. End users may still need to use WB 3.1 though to run certain programs, so not sure how they plan to get around that. Unless they just say to download AROS, download AROS roms, and... well, hope whatever they want to run, works.