Windows isn’t a dominant platform any more. Certainly not in the world of touch devices.
An offline editor should support Windows and MacOS, but in the fondleslab world windows barely registers as a rounding error globally. (In the same way I’d like a linux offline editor, but it’s going to appear only if trivial).
Sure it’d be nice to have an android app as polished as the iOS app, but which device do you test it on?
I am hoping that they release a ‘mini’mix app for iPhone/android when/after they do multiple IP connections. That’s where multiplatform support is important.