Currently the global rom for mi2(s) has just english and chineese and a handful of region selections... I know this is an old phone (and it has fewer because initially it had 2 system partitions), but would it be possible to add the other languages normally present on the other devices global rom? the recent miui versions have merged system partitions so the size restriction should no longer be an issue.

http://en.miui.com/forum.php?mod=viewthread&tid=362293 this describes it in details.