chris is right. If you are counting on a player batting in the 2 hole this year, and he ends up spending most of his time in the 6 or 7 spot you will hurt be hurt.
First off his On-Base % will fall as the 6th hole isn't looking to draw walks and slap balls through the infield as much as driving in runs. The 6th hole will get more RBI's, but if you are fine in RBI's it won't help you that much.
You know, like nunchuck skills, bowhunting skills, computer hacking skills... Girls only want boyfriends who have great skills.