You'll have large shadows defined by where buildings are in relation to the pylons and the shuttle would not be able to descend below the roof line in many area

You'll have large shadows defined by where buildings are in relation to the pylons and the shuttle would not be able to descend below the roof line in many areas outside of a subdivision with low 2 story houses depending on how tall the towers are. In addition you can't really do this anywhere there is going to be air traffic with the current systems as you'll need to shut it down whenever a helicopter wants to fly through.