I have no idea what kind of judge Miers will be and nor probably does anyone else in the commentariat. We probably won't know for a few years either way (assuming for the moment that she's confirmed) unless the nice people in the press do some digging to try to find out. All we do know is she's a reliable Bush fixer.
Wingnuttia is rather angry at the choice. I don't think this is because they're really concerned that she's not conservative enough for their tastes, although that's part of it. They're angry because this was supposed to be their nomination. This is was their moment. They didn't just want a stealth victory, they wanted parades and fireworks. They wanted Bush to find the wingnuttiest wingnut on the planet, fully clothed and accessorized in all the latest wingnut fashions, not just to give them their desired Court rulings, but also to publicly validate their influence and power. They didn't just want substantive results, what they wanted even more were symbolic ones. They wanted Bush to extend a giant middle finger to everyone to the left of John Ashcroft. They wanted to watch Democrats howl and scream and then ultimately lose a nasty confirmation battle. They wanted this to be their "WE RUN THE COUNTRY AND THERE'S NOTHING YOU CAN DO ABOUT IT" moment.
Whatever kind of judge she would be, she doesn't provide them with that.
