It is just generic hardware with a PowerPC. They don't make custom hardware anymore.
It would be nice to have all the Amiga specific connectors. e.g. you could add some upgrade cards to the sam460 instead of having to buy a whole new motherboard. It's almost not doable however.
Is more Amiga specific hardware required, not generic stuff?
Add dual boot into PowerPC + emulator, or classic only mode where only 68k things run (plus all the extra add ons.)