What a terrible proposal. The "problems" he's trying to fix are actually features of the Western notation system
I too have pondered over whether there are better ways to notate music and went through a fair few of the "fails" that he shows, before concluding that, despite its apparent clumsiness, standard notation seems to offer fewer problems than other systems.
One that he highlighted as one of the better tries was mostly just rotating the staff to vertical, which seems reasonable enough, though that creates another issue that isn't always obvious ... our eyes are better at seeing variation from the horizontal than they are from the vertical, so vertical staves are actually s little harder to read.
If one remembers that we were hunter-gatherers, then it should be fairly clear why we more easily perceive variation from horizontal ... things on the horizon are important for early sighting of prey and predators. It's also why we prefer faders and VU bars to be vertical rather than horizontal.