Aaron Hill for Kelly Johnson. Man Hill has been impressive for AZ. KJ had a hot month or two then turned into trash and left for nothing. Imagine Aaron Hill at 2nd instead of Boni, Kawasaki, Izturis.
Mike Napoli for Frank Francisco. Frank Fran gave us nothing but volatility and Napoli has gone on to be crazy productive for Texas and now the division leading Red Sox.

Cut JPA and Boni (two players who must be near the worst, like 30th of 30 for starters at their position) and put in Hill and Napoli and we have the best hitting in baseball.
Reyes
Hill
Bautista
Encarnacion
Lind
Napoli
Rasmus
Lawrie
Melky
.... yep