Per my last post, Digby makes a very good point - if a kind of ghettoization happens inside the Obama administration putting progressives in sales jobs and center-right Establishmentarians in policy forging jobs, one of the benefits would be that it could help shift the political language. That is to say that if Obama thinks it is important to sell his policies - whatever they may be - in the argot of movement progressivism, that will indeed help push back on "center-right" propaganda machine that seeks to present everything in conservative terms.
So while I continue to optimistically hope that no matter who Obama puts in whatever positions we'll get some pretty good progressive policy, I think Digby has made an additionally good point in noting that the Obama administration's structure could additionally help shift the overall parameters of the political debate to the left (or, more precisely, to the actual, progressive center of American public opinion). And that's not a small thing.