IIRC Korean alphabet doesn't distinguish tonality of vowels, so you can't actually use it at all. If you want spelling reform, bless the canonical latin spellin

IIRC Korean alphabet doesn't distinguish tonality of vowels, so you can't actually use it at all. If you want spelling reform, bless the canonical latin spelling with tonal markings as the new way to spell Chinese and be done with it. It's as much of a departure from the current system as any other phonetic system you come up with and you can enter it on most PCs already, no need to add to the Unicode standard, no need for new keyboards, etc.