Guitar technique: the right hand role during scales practice
Scales are a valuable tool to improve the coordination between both hands and develop a fluent phrasing.
Speed, sound, accuracy, articulation, dynamics these are all techniques that can be worked on with scales.
In my opinion, the right hand should be trained to perform scales with every fingering.
We can start with a minor scale pattern like this:
that can be transposed on all the fretboard.
Here a brief video: