That's really good, Doug, and music related too. The idea started when I tried to 'see' where the sharps where on the fretboard (visual cue instead of having to remember them). It didn't occur to me to
play the chord
Does it have a name?
Also, if you want to play in E (done less often and therefore less sure of which/how many sharps) you can 'see' straight away (on the fretboard) without having to go 'up and back' 4 times.
One good thing about music is that when it hits you, you feel no pain - Bob Marley