First off, the 2010 and 2011 Red Sox are inconsequential to the 2012 version, and the 2012 version, as is, is arguably better than the 2010 one.
As for the rest of your post, an SP would be pretty much the saving grace for everything, because it would move Bard down to the 5th spot in the rotation, Aceves to the BP and then all they need is to find a good BP arm from the army of dregs they have assembled. By law of averages they should find something. Doubront, Tazawa and Padilla (pending non-crazy outburst) could fill that need.
As for not having a "True SS", funny you mention that, because Scutaro wasn't a "True SS". They'll manage.
It all hinges on a SP, be it now via signing, trade, or mid-season.
I respond to your post with my analysis because i assume you are attempting to generate discussion in this, a baseball discussion forum. Consider it backlash if you shall.