I am not speaking about romanization, although it would surely be nice if all the cultures in the world used the same writing system. I am referring to what ko

I am not speaking about romanization, although it would surely be nice if all the cultures in the world used the same writing system. I am referring to what korea did with hangul. Of course you address some of the pain points like the fact that China is way more literate than Korea was when Hangul was introduced.