I like those and generally agree, though I'd change one thing: if you're designing something that's meant to be used - as opposed to just looking pretty - ignore advice about maximizing negative space. Just fit all the information your users need at a given moment on the screen. Information density is your friend, scrolling isn't.
(Of course, the section "Reduce Visual Noise" still applies.)
(Of course, the section "Reduce Visual Noise" still applies.)