Pitching depth? We have five guys vying for the final spot in the rotation and J. Johnson is about to get expensive. We have other internal options that can handle the closers role and trading one "would be" starter isn't going to kill us IMO.
Having Bourjos in the outfield with his defense and speed would be a huge add for us and having Trumbo split between first and DH with Davis is better than splitting it between Davis and Betemit.
Whether you would still have depth or not, doesn't really change the point. You are reducing the existing depth that exists, and you barely improve the positional lineup.
Bourjos is the best OF out of himself, Jones, and McLouth. However, if Bourjos is in LF, the difference between him and McLouth is not going to be significant - even with McLouth's Damon-esque arm.
If Jones is in LF, and Bourjos is in CF, I agree the defense has gained.
I also agree the offense is better with Trumbo at 1st/DH, with Davis at 1st/DH, and Betemit on the bench vs. Davis, Betemit, and both of Reimold, and Pearce on the bench.
The question is how much? I don't think the answer to that question is Johnson, Matusz, +.