On Intel code expectation: That was tried on Transmeta range of CPUs. Theoretically they could
run a PPC code, or Apollo code, but Transmeta never tried it in practice and code execution as software has shown really strange, but not great results.
On expecations on nVIDIA GPUs: They are so closed even x86/x64 Linux from time suffers problem to utilized them good. They are 3D gaming kings, but they keep it to themselves (Windows and Consoles)
My expectations of FPGA Standalone (back to topic)
FPGA Standalone might also be - FPGA board, like Myst and FPGA Arcade are. That means basically as advanced core at that date, possible Cyclone V instead of III FPGA - more Mhz, DDR3 RAM, hopefully 9-pin connectors for joy/mouse, USB and Ethernet/Wi-Fi, maybe more RAM to some point of 32-bit adress table )even 080 is 64-bit design but that would require AROS m86080 64-bit which doesnt exist nor is currently planned.
One or two PCI and maybe some weird Zorro card slot would be nice,
I remember that hardware-wise fastest "Amiga bus" was on DraCo due to linear
editing needs - "RASTABAN"
. Could something be learned there?
3× DraCo Bus slots
5× Zorro II slots
Using Zorro III would have either required the presence of the Amiga custom chips or the development of a custom control logic. MacroSystem has chosen to create a simpler 32 bit bus, essentially a buffered 68040 bus with AutoConfig support, and call it DraCo Direct Bus. The specifications have never been officially published, so there are no cards made for it by third party developers. Only two cards were available from MacroSystem (Altais and Draco Motion). The third slot was meant for a real-time rendering card with a DEC Alpha processor on it, but never finished.
The Zorro II bus of DraCo runs at higher clock speed, giving about 1 MB/s extra over the standard Amiga Zorro II slots. It allows the 16 bit V-Lab Motion card to produce better quality video output, but makes many Zorro II expansion cards incompatible with the DraCo.
The computer bus had some peculiarities. The Rastaban was a passive busboard full of expansion slots (much like S-100 busboards). It had 5 Zorro II Amiga compatible slots, and three DracoDirect slots. There was also a special cpu slot for an Alpha processor, that was never released. Zorro II slots offered a fair degree of Amiga compatible hardware options. On the other side, the DracoDirect slots provided faster speeds and 32 bit transfers, as they were merely created by exposing the majority of the microprocessor signals in those slots.