This write up lead me to wonder about the future of the Supreme Court based on the upcoming election. As a conservative, I obviously will be voting for John McCain.
I wonder, though, does anyone really want a court that is completely decided down ideological lines? It seems that to have nothing but conservative (or liberal) justices would mean having a court that's too blind to even consider the other side of the proverbial coin.
Consider what The Washington Post says about Justice Kennedy:
It is telling that Kennedy, currently the court's most influential justice, is never mentioned as a model by either McCain or Obama. Kennedy's iconoclastic views -- conservative on some constitutional questions, more liberal on others -- would not appeal to either candidate's base.
While I don't (and won't) always agree with Kennedy's decisions, what some see as waffling I see as being able to make decisions based on the merits of the case laid before him, not on an ideological cookie cutter in his back pocket.
In my last Supreme Court post, one commenter averred that some of the justices were merely "unelected dictators in robes." While that's obviously hyperbole, I'd agree that it's easy to think a justice has made a dictatorial decision if said decision did not go the way you thought it should.
However, one of the extraordinary aspects of the Supreme Court is that the justices are not elected. They don't have to kowtow to a political party. They can actually make decisions (like the child rape case) without having to assuage popular opinion a la McCain and Obama.
Maybe we need a court that looks and acts more like Justice Anthony Kennedy, and not like an elected official.

I personally would like to see another Sandra Day O'Connor. For nearly 20 years she was arguably the most powerful person in the country, and nearly every controversial decision came down to her vote.
Kennedy is cool, but he used to fall much more squarely in the conservative camp (a notable exception being the Planned Parenthood case). When O'Connor left, it was then that he took his place as the pivotal vote. I don't know if it was a conscious choice, or if it was just the way the cards fell, but his philosophy took a drastic turn when O'Connor left.
I totally agree with your point though.