I'm hoping Brownback tells us that Miers is unacceptable without additional information after meeting with her.
If Bush picked her because he had no stomach for a fight, why not appoint one of those well-known moderate conservatives out there instead? Maybe Gonzalez, or Clement. Easy pick, easy confirmation. But he didn't. If he was just looking for confirmability, they'd be shoe-ins. So he must be looking for something else.
Now no matter how unsatisfactory Bush has been on a lot of issues, he's been really good on judges. Fought hard for a lot of very conservative circuit court nominees. Seems a bit odd that he'd go so out of character to pick some moderate for such an important pick, doesn't it?
The explanation that makes the most sense to me is that he picked her because she's the most conservative candidate he has who is confirmable. He knows her and her judicial views extraordinarily well because of her involvment in the process for selecting candidates. He knows where she stands, and most importantly, he knows the Dems can't prove it. They are stuck.