The goal is to make the availability of the gom-latn interface language more prominent for users (at least those who can use ULS).
T104810#1430162 says there is already consensus for this on http://gom.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%95%E0%A4%BF%E0%A4%AA%E0%A5%80%E0%A4%A1%E0%A4%BF%E0%A4%AF%E0%A4%BE:%E0%A4%B8%E0%A4%AE%E0%A4%BE%E0%A4%9C%E0%A4%BE%E0%A4%9A%E0%A5%87%20%E0%A4%AE%E0%A5%81%E0%A4%96%E0%A5%87%E0%A4%B2%20%E0%A4%AA%E0%A4%BE%E0%A4%A8#Tab_to_change_the_menus_between_Latin_script_and_Devanagari_script