No.
I don't think that would eliminate our issues. Thinking and behaving collectively is much more important than just living in the same place. For example: buying black, banking black, hiring black, investing in each other, helping each other to raise and educate our children. These are things we could be doing right now, but aren't.
If our mindset hasn't changed, if we still have the same crabs-in-a-barrel mentality, then us living all up under each other isn't going to change anything. We would still find ways of dividing each other, either by skin color, or by class, lifestyle, religion, gender, etc...
Me personally, I don't particularly like living in areas with only one type or group of people. I prefer living in diverse areas, learning about other cultures and ways of thought. And in no way does that take anything away from the love I have for our people or the pride I have in myself.
I suggest you visit a local Hasidic community in Brooklyn? (If they allow you in) I assure you they're a quite self-contained SEGREGATED community, equipt with their own "police force". On saturdays they have the traffic re-routed from their neighborhoods, without exception.