I agree. This is really needed to get rid of invisible barrier in front of many potential Korean users, which cannot be neglected in terms of population.
Yes, will probably require a Korean dev for this. It could be something simple, like we have enabled IME input while using the Japanese and Chinese translations, but did not for Korean. Or it could be piles of work. But at the very least needs a Korean dev to do the work and confirm it performs as intended.