The notation isn't just showing me what buttons to press and when -- that's almost the least important part of the notation. What it is showing me is how everything is moving in a tune, which allows me to make decisions inside of it, and I'm not sure a base-12 notation like this is even capable of expressing that.

It's totally understandable for a beginner to want to make something like this though, because that context of harmonic analysis doesn't really come into play until years later.

Lifelong musician here and I agree. New standards of music notation are the equivalent of Esperanto: cool, but ultimately not super practical. That being said, I enjoy alternative ways to think in terms of music theory, so I still think this is a neat project from an abstract point of view.

I feel like those are idiosyncrasies that feed into eachother i.e. you need to have 2 notations for same sound just because other decisions made it so there is no extra info passed other than in b vs #

So alternative notation could still make it clearer/"mathematic" but would essentialy need to include all of that, and for that as you said, you need people with wide experience about music and for them, they already are fine with standard notation so for them it wouldn't be an improvement because nicer learning curve doesn't matter once you learned it.

Classical keyboard layout is kinda similiar in opposite way here; beginner can just slap some white keys and get something musical and they can learn from there, while various chromatic keyboard layouts might have some nice benefits (chords being "same shape" regardless of where you play them), it is harder to start on it.

It just adds the numbers inside the notes.

True, but it's not a fatal flaw of the notation, because you can annotate it with written chord names above the notes. This is common in guitar tabs (which are almost isomorphic in standard tuning, and fully isomorphic in regular tunings).