It appears the Koreans were the smart bunch among east Asians. They ditched the tiresome Chinese writing system and moved on to something much more elegant: https://en.wikipedia.org/wiki/Hangul.
But to suggest that makes them the "smart bunch" of east Asians comes off as pretty derisive. Hangul has had its own unique issues with regards to typewriter design which has also been alleviated thanks to IME.
Arabic script, for example, is always cursive script, which requires a computer to link the characters when typed, which is a similar problem that hangul has, where the character blocks are broken down syllabically. You could create a phonetic alphabet keyboard covering every single possibility, but the issue here is that you have over 11,000 possibilities, which in the end puts you in the same predicament that Hanzi and Kanji are in, where you end up with these amusingly difficult to use typewriters.