If they can extend M-1 north of 8 Mile, I can see a real utility. I don't think the 3.3 miles is going to cut it. I recall that Ferndale was pushing for a line that reached them. Of course, it could go all the way to Pontiac, but I imagine that the Birmingham portion might not have any stops. :)
It would be great if the New Center part jogged west to the Fisher Building. The longer the Woodward portion, the more sense branches will make.