My interactions are with content, generally as strings of text but often as picture/video/audio. I prefer that my 'desktop' apply the principles you've mentioned, to the problem of tastefully and comfortably arranging, displaying, and manipulating that content, and little else. Some types of controls that lean skeuomorphic, like sliders or switches, may be useful and even intuitive in that endeavor; others, like an analog knob or dial, aren't. If I want to watch a video, display it in a minimal, tasteful frame; I do not need a representation of an old 1970s wooden TV or something.