It seems to me that this should be rejected:
https://meta.wikimedia.org/wiki/Requests_for_new_languages/Wikipedia_Hanja_2

Our dear enwiki says:
"In South Korea, Hanja are used most frequently in ancient literature, legal documents, and scholarly monographs, where they often appear without the equivalent Hangul spelling. Usually, only those words with a specialized or ambiguous meaning are printed in Hanja. In mass-circulation books and magazines, Hanja are generally used rarely, and only to gloss words already spelled in Hangul when the meaning is ambiguous. Hanja are also often used in newspaper headlines as abbreviations or to eliminate ambiguity.[19] In formal publications, personal names are also usually glossed in Hanja in parentheses next to the Hangul"

It makes no sense to have an entire wiki in Hanja.