As a synthesiser designer, I'd like to thank you for the effort required to document this process and for sharing your fine conclusions.

Now do a Fitts' Law analysis! :)

Seriously though, your collection is pretty neat. My mind wanders at the thought of putting a synthesiser-generator around the collection of 'fake' panels, such that they end up actually doing something .. if there were a way to use colors as layers, could maybe even use that as a hinter for an automatic signal flow, hmm...