There has been a lot of discussion for the past couple of years about implementing the Designated Hitter role in National League lineups. The argument in favor of an NL DH its potential to increase run production and make the game more entertaining.
When considering this an argument, though, it's important to consider both sides, and there has not been much literature produced on the opposite: removing DH from American League.
At first glance, it may sound like a crazy idea. No team in the AL would support this, unless they have pitchers like Zack Greinke or a Madison Bumgarner, who can actually hit the ball.