Nice article. And it's good that it's getting out to the OS community at large. Some outside perspective - especially from former Amiga users - could be a valuable marketing probe. I'll read the comments at OS News in a little while.
PPC for OS4 made a lot of sense in the past, since there were the existing Cyberstorm/Blizzard PPC boards to serve as a development platform and compatibility with classic PPC software was a design goal. The picture is blurrier now, since PowerUp compatibility is non-existant and WarpOS compatibility seems to have become an afterthought and is... a bit weak.
But it's 68K compatibility that's critically important. As long as the integrated 68K emulations make it over to a hypothetical x86 port, there won't be much of an issue. Existing OS4 software is hopefully new enough to have not had its source code lost and thus require minimal effort to bring to x86.
There are still merits to AmigaOS on PPC, though. I suspect computers with absurdly low power requirements are going to become a pretty hot market in the next few years and PPC Amigas could carve out a healthy niche there, offering on-par user-perceived performance using 60W instead of 300W. The kiosk market, dumb terminals, and other embedded markets would be worth investigating. Even with higher-cost boards, they'd pay for themselves in electricity savings after a few years.
This all depends, of course, on PPC maintaining its performance-per-watt advantage over x86.
