Isn't the main argument against the Han unification that the characters are actually visually different between the languages? One could certainly "just use a

Isn't the main argument against the Han unification that the characters are actually visually different between the languages? One could certainly "just use a correct font" for each of these languages, but currently it is actually impossible to write a text in Chinese and Japanese and have all characters be represented correctly without additional metadata. Wikipedia article does give many good examples of where this causes issues. https://en.wikipedia.org/wiki/Han_unification https://en.wikipedia.org/wiki/Han_unification As you have pointed out, this is not consistent over the unicode. Russian Р could just reuse the latin P. I think that bandwidth and memory nowadays are cheap enough that we could have a few (relatively) more code points to encode all languages properly.