You have a facination with technology that does not translate well in the real world. Note in the picture I gave you, ALL the planes are on the flight plane. Note that the flight plane is not 6 inches wide but about a half a mile wide or more.
Watch planes coming into or out of an airport, do they line up like little ducks?
Thats ok, enjoy the technological fantasy, it is how you invent things that do work. A stage or two beyond where you are at is called invention or genius.
“Watch planes coming into or out of an airport, do they line up like little ducks?”
When they are in a landing approach following ILS, yes they do...usually with one mile separation, IIRC!
Taking off, not at all, but each airframe passes through a very predictable runway kill zone on take-off.