I don’t believe they would’ve even presented the option to us in the first place if they weren’t prepared to spend time/resources on it, without noticeably slowing down the games development in the process. The team is comprised of people with different roles afterall. You won’t see the Art Director composing music or the Sound Director programming new PvP features.
If they plan on doing it, then it’s better to get this done before the games release so no one can write “It’s the International English version, but almost all of the voice-overs in the game are done in Korean. Hopefully this changes in the future.” in their review.
