This will put a burden on Thomas, Scalia, and to some extent Roberts, to keep her legal compass steady.
That is not my only concern, but as concerns go I feel pretty confident that those Robers/Scalia give us all the "intellectual heft" we need.
I'm more scared about Roberts on the court. He one of those people who is "really smart", and knows more than everybody else. He seems nice enough, but that personality is prone to "doing the right thing", because they are so smart they know better. You have to hope that what he knows really puts him in the right judicial philosophy.
Because if he ever decides otherwise, he's smart enough to make the argument VERY convincing to the other court members.
My hope is Roberts will be smart enough and "right" enough to pull Kennedy back to his roots.