Those that would like the experience of running a 1980's/90's OS would be probably be disappointed, yes. But I'd say those that want an OS that is usable in today's world will not miss any Amiga(oid) OS at all, as they stand today.
Indeed, so Commodore USA should market this as a new Commodore PC. It has no link to the Amiga name and doesn't natively run Amiga software. It is not an Amiga and shouldn't be marketed as such. This is the point I've been trying to make for some time now :)
Of course I'm arguing from a common sense perspective whereas Commodore USA are almost certainly coming from a 'abuse the brand name to suck people in' perspective. Only, this has a huge potential to backfire as those interested in the Amiga name will be ex-amigans, who are likely to have similar expectations to myself and react in exactly the same way when they discover it doesn't actually run Amiga OS.