Yeah, while she's sometimes got a bit too much of an otherworldly quality (omg that woman!) compared to a down to earth character like hopper, I think blanchett could do her quirky pesonality better than the somewhat regal mirren.
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition