Great work and info Jeff.
I do not have a PPC Mac Mini (mine is Intel), but I do have
a dead G4 PowerBook laptop that I would resurect if AOS4.x,
or MOS2.x were to be ported to it.
You ask why would anyone want AOS4.x instead of MacOS10.x
on their Mac hardware, and I would answer this: (in no order)
1. Just to see if it can be done.
2. Because of that lightning fast response AmigaOS4.x provides.
3. Because this is just a first step toward network drivers
and many other improvements that will follow later.
4. The obvious reason is that there is no current hardware
available for AmigaOS4.x and there are still many people
that want to develop for it and to use it for their everyday
computing needs, even if it never catches up with other OSes.
5. There are thousands of PPC Macs out there that will soon
be available for next to nothing and it will be a great source
of faster hardware for that lightning fast AOS4.x (or MOS2.x).