But why would that be better, or even preferable, over Wine on top of a Unix-like OS with current programs to run sde by side with your legacy app?
It's they project, their motivation, but I can't share it or understand why not devote these resources to make Wine better (or a better Wine, BTW). It's pretty obvious they are fairly bright guys.
I have to agree with the Unix zealot (I am probably one myself - Unix is a local maximum in the OS space, as eloquently illustrated by the failure of, for instance, Plan 9): of all OS concepts (and with so many exciting ones - like Plan 9) there are to be reinterpreted/reimplemented, why Windows?