I suppose the usual experts who have been advising Republican campaigns have failed to notice that the only effect of pandering to minorities has been to steadily erode their core constituency, while gaining not a single minority vote.
Romney was right about many things. He was particularly right about 47% of the electorate not voting Republican regardless of what is done to court them.
Focus on conservative principles and getting out the conservative vote. If that fails, then at least it fails on its merits and not because so-called "architects" like Karl Rove are too smart by half in developing strategies. Has anyone asked what he has won lately?