The National League should add the DH, or the American League should get rid of the DH. The umpires should be MLB umpires. Period.
Look at the NFL. Same rules. Same officials. Same game.
I've had baseball traditionalists reference the Knickerbocker Rules on me. Remember, those rules said that a batted ball caught on the fly, or after one bounce, was an out. So, I don't want to hear about 'tradition'. Baseball can change, again.