(a) Definition A team may not execute more than three (3) consecutive handpasses in open play without the ball being:
Kicked Played off the ground Contested by an opponent
(b) Application
A handpass shall be defined as a strike of the ball from the hand(s) The count resets upon any legal kick or change in possession
(c) Sanction
Free kick awarded to opposing team from point of infringement"
Wasn't something like this tried before? I remember some local refs were very against it. Ig you introduced it now you would need 2 refs. One for each half of pitch. Between the 3 v4 up rule, steps and handpass counting it would be very difficult job for 1 person to officiate especially with the 3 caveats you have in too.