Two requests have come to my attention which we should reject:
https://meta.wikimedia.org/wiki/Requests_for_new_languages/Wikipedia_Romanized_Khowar
https://meta.wikimedia.org/wiki/Requests_for_new_languages/Wikipedia_Romanized_Pashto
Apparently, these languages are not written in Latin script. There is also, of course, no extra ISO code for "Romanized" versions of them. In any case, no separate wikis are justified for them.