in the event of a draw there should be an infinite amount of extra time, however every minute a player from both sides gets taken off the pitch in random order so by the time 10 mins are played you are down to 1 man each, and the rule should be that you can't play rush goalies so you can't just stick an outfield player in goal when the keeper comes off.
Football just keeps getting worse
I can’t see how playing at home in the second leg gives you an advantage