Yeah ColdFire is also a dead end because Freescale isn't going to be releasing any more models and certainly not at any higher clock speeds. And it's really being made for specialized markets (automotive, ethernet switches, etc.)
The FireBee is a neat hack I don't mind supporting, but if people really want hardware and emulators don't cut it, then FPGA is probably the way to go.
Or switch architectures and port the OS (EmuTOS and/or AROS) + some sort of CPU translation/emulation layer for 68k stuff. It would probably have to be something big endian, so that rules out RISC-V but OpenRISC, J2 (SuperH) and OpenSPARC are some open source candidates.
The FireBee is a neat hack I don't mind supporting, but if people really want hardware and emulators don't cut it, then FPGA is probably the way to go.
Or switch architectures and port the OS (EmuTOS and/or AROS) + some sort of CPU translation/emulation layer for 68k stuff. It would probably have to be something big endian, so that rules out RISC-V but OpenRISC, J2 (SuperH) and OpenSPARC are some open source candidates.