Translation to additional languages

[ms-mialingvo]

The current options for language translations are missing some languages that I need.

Possible solution (A)
Make it possible for people to add languages as they want. Those new languages would need to be available for everyone to use afterwards.
Pro: It wouldn't result the huge list that we'd get if we'd import all 639-3 ISO codes. Languages that aren't included in 639-3 like very specific dialects (as I need one) still could get added.
Contra: People would've to follow the instruction to use 639-3 codes, otherwise it could become a mess of codes.

Possible solution (B)
Add all options from 639-3.
Pro: That list contains pretty much all possible languages and dialects anyone would ever want to translate to. (See e.g. https://iso639-3.sil.org/code_tables/639/data?title=&field_iso639_cd_st_mmbrshp_639_1_tid=All&name_3=arabic&field_iso639_element_scope_tid=All&field_iso639_language_type_tid=All&items_per_page=200 for arabic)
Contra: It would result in a huge drop-down list. I'd still need for you, Benjamin, to specifically program the one dialect that I need that isn't there, but I'm pretty sure that would be a one-time exception.

[ms-mialingvo]

Re-thinking this, solution A is better because of the flexibility.