I'm not sure about that. I lean to the left but my biggest complaint is how easily democrats get pushed around.. My guess is that after a month of editorials in the WSJ and the constant drumbeat on the trail, they'd offer to vote on a centrist candidate, the republican in office would nominate someone pretty far right, and then to save face, they'd vote anyways and lose the vote.
That has nothing at all to do with how justices are confirmed. As others have pointed out, the last two Obama appointed justices were appointed in less time.