An expat - although from something I never really knew as I was one year old when I left - I've been following some of the expat sites that are encouraging ex-Detroiters to return and, most significantly, invest in the City.
A very active one: DETROIT NATION - http://www.detroitnation.org/ - formed by Rachel Jacobs, part of a group of New York-based expats (formerly called 635 Mile, for the distance from Detroit) who have now developed an active program with folowers and chapters throughout the nation.
Among their programs, a job posting for work in Detroit. Also very active on their Facebook page at https://www.facebook.com/DetroitNation
A new one just discovered: BORN AND RAISED IN DETROIT (BARD) http://bornandraiseddetroit.org/
Probably more for there seems to be now more than nostalgic interest in those who are from Detroit about the state of the City. OTH, it would be good if they all got together into just one powerful organization and with the power of many could not only contribute financially but with the power of numbers support and make effective change.
'CAN WE TELL THE WHOLE STORY?"
again, always reading the comments as well, this article by the General Manager of Detroit's NPR station, WDET is worth a look: http://wdet.org/shows/wdetraw/episode/can-we-tell-the-whole-detroit-story/?hq_e=el&hq_m=1671315&hq_l=1&hq_v=e6609d3a02
LAST - another magazine/blog. Always learning more about the city from many different perspectives; THE HOUR/DETROIT http://www.hourdetroit.com/