Roarin Storin, Nats2Playoffs, or NotLD need to take some of the art from "Yellow Submarine" and photoshop in pictures or cartoons of the front four of the rotation (Jackson included). For Yellow Submarine Horn, Strasburg would be John and Gio Paul, because John played righty and Paul played lefty. JZ would be George, because he's great and could lead almost any band of pitchers but is not quite at the level of Stras and Gio, and Jackson would be Ringo, competent artist, capable of a some very good performances, but not to be mistaken for the lead of the band.
Alternatively, you could do some sort of late Beatles Let It Be type cover, again with the Fab Four, and with the battle for the 5th Beatle featuring Detwiler as Billy Preston, CMW as Eric Clapton (sat in on "While My Guitar Gently Sleeps") and John Lannan as Pete Best, the guy who played with the Beatles before they broke through.