A great idea, but I wonder what Elon Musk's ideas about addressing the possibility of the Kessler syndrome; collisions between orbiting debris at an exponential pace ultimately leading to the denial of safe orbits to humanity.
Given SpaceX this is clearly something he should be deeply concerned about, but is he addressing it in any way, or just adding to the problem?
I'd say he is having a positive impact with his focus on reusable rocket stages, therefore less debris in orbit... a cloud of micro-satellites (how manueverable?) might be going in the other direction.