Voicings on scales
That kind of approach is another way to envisage voicings. Here are a few examples that I use more or less regularly for voicings.
Diatonic scale with root notes on the four middle strings (here in Bb):
Diatonic scale with root notes on the four highest strings (here in Eb):
Another way to play the diatonic scale on the four highest strings (in CM7 here):
The two same chords Dm and Em can be played in various positions on the neck which creates a a three-note chords scale (based on the CAGED system), on the three highest strings:
Diminished scale (the easiest voicing in the world) on the four central strings and on the four highest strings. The fingering does not change:
Whole tone - half tone scale on the four highest strings:
Melodic minor scale on the four highest strings (in Em7 here):
This can be done on any kind of scales.