Absolutely it can be a problem in areas where their are a lot of wires, the screen could end up resembling scribble!
I wonder if it would be good to only display the next three lines in your current path?
Agree that the database needs be kept right up to date. Presumably any agency that wants to put up a pole or pylon forming any part of a line would have to seek permission to do so and could database entry/maintenance be made a condition of all and any permission(s) granted?