What about reducing the area to take the drop goal to inside the opposition 22? Would this be pure stupidity or would it provoke a deeper thought before letting fly with a drop attempt?  The way I am looking at it this would mean the attacking team still has to reach the oppositions 22 in order to score (short of a penalty) and encourage more attacking rugby.  It would lessen the chance of a game turning into a kick and chase back and forth down the feild all day.