I agree. But too, necessity is the mother of invention. GP seems to argue that Han unification happened because the UC was not diverse enough. Maybe, and maybe if it had been diverse enough the need would have arisen sooner. But again, the thing they came up with could have been garbage, who knows!

What I do know is that UTF-8 is genius. The Han unification problems seem mostly minor -- I suspect code can detect language and do the right thing, for example, and again, we could revive language tags if need be.