Idea for a new doc film

I have a new idea for a doc film that I might start trying to do. Doing something on my fellow german language students in the Integration Course might be very interesting and lead to great stories. They are here from all over the place, Syria, Lebanon, Iraq, Afghanistan, Russia, Turkey, Brazil, just to name a few countries. I'm sure they have much to say about their immigrant experiences in Germany, what it's been like for them, what they dislike, integration challenges, etc. I don't have the slightest idea whether anything has been done already on the immigrant experience in Germany but I never care about that sort of thing anyway. The more stories the better. Let a thousand documentaries bloom! I've got to figure out what kind of PAL camera to get soon!