It would be great if somebody tried to create an opensource version of Rhapsody DR2 that ran on X86 baremetal.
Would not even need to be binary compatible. Source compatible API would be enough.
Rhapsody DR2 is more like Classic Mac than any current MacOS.
Source compatible API it's GNUStep since the 90's.
At least the NeXTStep part; not the Mac GUI (Carbon?) one.