[Buckeye McFrog]

Could Harriet Miers have possibly been any worse??

[Kazan]

Could Harriet Miers have possibly been any worse??

Samuel Alito replaced Miers, not Roberts, and Alito has been a great justice.

[tanknetter]

Could Harriet Miers have possibly been any worse??

Harriet Miers wasn't nominated for Roberts' seat. She was the original nominee for Alito's.

The sequence was that O'Connor announced her retirement. Roberts was nominated for her seat. Then Rehnquist died and Roberts nomination was moved to the Chief Justice position. Harriet Miers was nominated for O'Connor's seat. Then Miers withdrew and Alito nominated in her place.