I don’t understand how being suckless translates to not supporting CJK? The library purports to support UTF-8, which includes CJK characters.
I feel that CJK user experience or other features that the core maintainers don't use isn't taken as importantly as simple code in a lot of open source software, especially the ones that wants to be 'suckless'. I would truly be immensely grateful for this author if this is not the case and every feature of TrueType gets implemented - especially if with more simple & lightweight code.