That's the part where I stopped reading... That'd be fantastic, I hope it happens. But... Wine's been going for at least 20 years, and the last time I tried, it still had major problems. Unfortunately for Wine, Microsoft keeps adding APIs. Even more unfortunately, their architectural sense leans towards "shove all the internal complexity onto the developer". I assume it is harder to re-implement a lousy architecture than an elegant one. At least Cocoa is fairly well thought out and mature. But, it's still a lot of code to write.

Just wait until they get to CoreAudio, though, hahaha! Not at all clear how that's supposed to work, and good luck if you want a sample rate that's not the default. Oh, and don't ever change anything about your environment once you've got it work, like, say, the operating system version.