Is there any opposition to changing the CJK font in patterns-fonts-fonts_opt from efont bitmap (which has not been updated since 2004) http://openlab.ring.gr.jp/efont/ to Babelstone Han which even just got an update on Jan 1 2023 https://www.babelstone.co.uk/Fonts/Han.html ?

Babelstone unlike the bitmap fonts covers the most recent edition of Unicode quite well while not having the disadvantage of being a bitmap font (and thus being hard to read).