After stumbling through this thread only one thought comes to mind: WHY???
Why not? Why not try to do it better, or nicer, or more interesting, or simply different? Applying your concepts, PixInsight should not exist... as most of our competitors say everyday
As for operating systems, as a software developer and a user of a large variety of computing systems since the early 80's, I have to say that I have basically zero interest in Windows. My interest on OS X (now macOS) is only moderate and exists just because it has a UNIX foundation (though hidden), and my main interest these days is Linux and FreeBSD. I don't think I am an OS-fanatic; that's just how I like things to be, based on my own experience and on what I have learned across the years. If I were an OS-fanatic, I wouldn't develop PixInsight on four platforms.
Definitely, the implementation of image acquisition and hardware control tools in PixInsight is an extremely interesting project that I'll always support. Don't be afraid about it. We'll do it better, different, more interesting, and multiplatform. For sure