I don't see any problem for making request for Brahui Wikipedia 
eligible. It is a Dravidian language spoken in Pakistan (Afghanistan
and Iran) .
We have request for Hawrami Wikipedia . It is one of Gorani dialects . Request is invalid as it uses the code "hac", which is a generic Gorani code. According to Ethnologue, there are less than 50.000 of speakers in Iran and Iraq. It would be good to have one project for all dialects. However, it is possible that distance between Gorani dialects is big enough to have separate projects. (According to Ethnologue, literary tradition is very old.)