For a couple of years we had a rule that the free kick neutral couldn't extend into the end zone, as it was felt to be "hallowed ground". Then this was questioned :
(1) K punting from end zone, fair catch made @ K's 20;
(2) after DPI & USC on B's coach ,ball @ B's 5;
(3) A decides to free kick for FG;
(4) R sends 6'9" "jumper" to stand at goal line to block;
We then decided that there really not a reason to allow a neutral zone to extend into the end zone as the kick would be dead and a touchback as soon as it reached the goal line.
……..
AND NOW YOU KNOW THE REST OF THE STORY