Boro Park has become far too Chassidish for something like this to succeed there. I was away from the US for 13 years and when I came back 5 years ago I found that the old BP I remembered had become more and more like Williamsburgh. I heard far more Yiddish, especially in the stores, and saw far more Yiddish ads of the type I associated with Willy.
Maybe Kensington is more of a place for this – close enough to both BP and Flatbush for some people to walk over but with more of a mixture of residents.
BP needs an Airmont shul – culturally Ingarisch-Chassidish but open and not tied to a particular Rebbe or chassidus.