I would keep sending Novoa, Wuertz, Ohman, and Wellemeyer through the wash, rinse, repeat cycle of sending them down to let their arms rest and then calling them up once they're fresh.

i would rather have 12 pitchers, and a smaller bench. my thinking: dusty has proven (to me, anyhow) that his bullpen management is weak, and that his bench people are preferably veterans. an extra bench player right now (grieve) would take starts and/or at bats away from murton, cedeno, and greenberg. these will be the players who spark a second half success, not the 11th or 12th pitcher.
in the event of a major acquisition (dunn i <3 you), then say good bye to novoa. unless a pitcher were part of the dunn trade. just my take. thanks for reading.