The one thing I wish the author had emphasized more throughout the examples is that the harmony doesn't have to move at the same time. It's an excellent description of voicing, but a lot of the examples given can also be solved in other ways that might be more pleasing by changing certain harmony notes at different times.
For example, at one point, the author suggested an F#-A-C chord in G major, which naturally would tend to resolve to G-B. My natural inclination, assuming the A is the melody (or the C, really), would be to do one beat on the original chord, then drop the F# to a D for a beat, -then- resolve the upper parts to G and B.
Alternately, if the F# happens to be the melody, do a mid-chord change from C to E, under the assumption that this is probably really a Dmaj7 and can turn safely into a Dmaj9, and the E naturally leads to a high G, resulting in a (relatively) clean G-B-G. This also can be a bit more striking than the alternatives with a B or D on top, since both ends of the chord are the root.
That said, this is an excellent article. I guess what I'm really saying is that there should be a "part 2".