How Can Major League Baseball Shorten Games?

This post was inspired by an article that I read in today's New York Times.  The couple seen above seems to be falling asleep during a baseball game that is likely too long.  The average game is more than 3 hours long.  Here are some of my thoughts on the subject:

• I just hate it when a pitcher is brought in to face just one batter.  You don't have to play the percentages all the time.  Perhaps teams should be limited to 11 pitchers on the roster.
• There must be a limitation on how many times a catcher can consult with the pitcher during the game.  A manager or pitching coach can visit the mound once in an inning.  Perhaps that rule should be changed to allow only one visit per pitcher.
• Umpires should limit the times a batter can step out of the box.
• Ideally there should be less time between innings, but TV must get all their commericals on the air.  No changes will be made since the almighty buck rules.
• Likewise, very often batters work out a deep count and foul off many pitches.  This is part of the game and shouldn't be changed.