Glad the World Cup is over. If they want to appeal to Americans, they need to change the rules. I suggest:

Stop the clock when play stops, and show the time remaining on the scoreboard.

Have commercial breaks to suit US TV.

Fix the off-sides rule, so no goals are called back and so that the average viewer can understand it.

Allow substitutions on-the-fly.

Allow players to use their hands, provided that they do not run with the ball or throw a goal.

Double the penalty kick distance. It is just too easy to score on a penalty kick.

Figure out some penalty system that is better than giving out yellow cards.

Give each referee a whistle.

If there is a tie, play sudden-death overtime until there is a goal.

Fix the out-of-bounds rules so that no one has an incentive to deliberately let the ball go out of bounds.

Make the goal bigger, so that games have higher scores.

Get better referees.