Pull an Apple out of your hat and re-core AmigaOS around a Linux/BSD distro... EVEN IF YOU HAVE TO RUN IT ON CLOSED HARDWARE like Apple tries to do with their systems.
http://www.anubis-os.org needs Linux/AOS Developers. Biggest issue since MrBIOS took over as Project Leader is getting Developers to agree on a starting point where the future development can evolve to the project's original goal and not throw out POSIX, but keep it hidden from end users. With limited number of Devs, it's a really tricky middle of the ground to find and have everyone agree to so that development can begin. Yes, it'll be x86/x86_64/ARM based. I expect to see bounties listed on Power2People in the next six months for Anubis-OS.