In a perfect world, an OF of Anthony, Duran, Rafaela and Abreu would have 2 RHB and 2 LHB. Being overloaded at LHB hurts that rotation a little. This is a little similar to what happened in St Louis and them moving O'Neilll. Either one of these guys will fall back into non-starter production, the Sox will figure out a rotation for all 4 or one of them will be traded.
I think Breslow ends up trading a few guys this offseason to clear up spots for the big 3 and others.