Excellent and well written article @JimHarper , welcome to the forums!
Public goods that would benefit Zcash include popularizing privacy-protective cryptocurrency, drawing in and educating users, developing user-friendly interfaces, and teaching people to secure their crypto assets and their privacy at the same time.
I fully agree there is a need for this kind of education and I had mentioned in this thread, I think it should be a top priority for the MGRC.