I'd probably get rid of the shortstop when pitching against power hitters without runners in scoring position. Then have the 2nd baseman play on either side of the bag, or right behind it, based on pull tendency and pitcher's speed. That gives you 4 outfielders, which means very little chance of giving up a double.
Also, I'd like to see more of the squeeze play.
And maybe have the third baseman occasionally play in position about 2 feet behind the batter and talk to him about local politics. How would you like to hit with someone standing over your shoulder all the time?
More diving for the bag at first base.
On double plays, instead of sliding for the guy's feet, jump up in the air like you're going to block the throw, just to screw up his line of site. Try not to get hit by the ball.