While I understand that some would like to run Windows software without being attached to Microsoft, Linux exists. Linux is free and superior to Windows in many ways. For the few legacy programs that need to be run on Windows- JUST RUN IT ON WINDOWS. Then use the 20 years you just got backto develop something that protects user's data or helps developing countries or actually pushes the boundaries of the field instead of redoing an archaic platform on which no growth can occur.
Again, I'm not dissing the effort that any of these devs put into the project- it's extremely impressive. There simply exists no reason for this project to have procured the funding and man-hours that is has.