I imagine some of this getting better stuff is that you're still feeling out the roster and roles in the first half while in the second half you're not only adding at the trade deadline but also more likely to have guys in more defined roles. Improvement on the pitching side might be tough to see but if Sproat and say Drohan shift into the bullpen with a SP addition or two at the deadline you could see the pitching overall take a step forward.
Misiorowski, Harrison, Henderson, Drohan, Sproat to Misiorowski, Harrison, Henderson, Trade, Trade. Just getting Sproat and his 123 ERA- and 120 FIP- out of the rotation could improve the rotation and then you have Sproat who has a 3.11 ERA and 4.00 FIP first time through the order in the bullpen where he would be an upgrade over the Woodford/Anderson part of the pen. Drohan's 2.95 ERA and 3.26 FIP first time through the order would be an upgrade over what our second best LHP in the pen has been giving us this year.