Some interesting feature requests can be found here:
https://github.com/NodeBB/nodebb-plugin-2factor/pull/93
In short:
proposal to move all language files to Transifex and allow translators to work on translating plug-ins (pre-installed/default/bundled plug-ins were mentioned),
123456 vs. 123 456 as common i18n problem not only for Korea and Japan,
some other shortcomings from Korean user point of view.