I just wanted to say that this is a great post. We could all do a lot better from understanding why things work, rather than just copying a few things which work until we're bored of them and need a new tool to use.
Anything with a 9th on the top, always. Also, Maj/min chords, i.e. chords with a minor and major 3rd in the same chord. D min/maj add9 in standard tuning would be 203230. Funsies.
Seconded advice on focusing on velocities. Gotta be realistic with them: strong on 1 and 3 (5, 7) , a bit weaker on 2 and 4 (6, 8), and progressively weaker on off beats. Do it by hand for some natural variation. You can copy the beat and modify the velocities slightly, even just by grabbing...
I think writing to follow a key is a recipe to be prescriptive rather than descriptive. Keys and scales describe typical note groupings but they don't mean you need to try to stick to that. If you want more interesting chord progressions then try to just focus on the chords, regardless of the...
I think perhaps it would help symmetry/familiarity of shapes to extend the point on the headstock where the headstock joins the neck by the lowest string? Like make it more pronounced? It's a really nice shape overall, though.
Liking the V design. Can we see it face on, rather than slanted, to get a better look? From that angle I feel like it'd look slightly better with the tip of the headstock pointed more toward the ground. Like not right at the ground, just less up than it is.
Gotta be conscious with it too though, huh? It seems there are people who think having a metronome on while they play will magically fix their timing, despite not paying attention to how their playing interacts with the metronome.