My prediction is that at some point there will be a scenario similar to that of Klavar. An Alternative Notation project will initially follow the bottom-up path. When the notation goes viral, individual instructors will realize that more students can be attracted and retained. Positive evaluations by academic researchers can accelerate the process by helping to persuade front line instructors of the value of Alternative Notations. As momentum builds over time, music schools will get on board. When positive results are published in educational publications, instruction widens to the point that it is commonly taught in music schools and private instructors and thus in the mainstream of music.
The pace could be very slow, or with an increasing population of young people open to new ideas and technology, it might evolve briskly. One possible breakthrough would be some extraordinary publicity. Perhaps a celebrity musician used them or even promoted them in a strong advertising campaign on TV and social media (where's Taylor Swift when you need her?). Or maybe positive reviews in the New York Times and the like would also dramatically raise awareness of the value of Alternative Notations. In other words, a significant boost in visibility that results in some buzz outside the established music world could be a game changer.
