The replacement for Miers, should there be one, is very likely to be Gonzales.
The best plan "B" would be for Justice O'connor to resign, President Bush to appoint Judge Bork during a Congressional recess, and then nominate Janice Rogers Brown to fill the seat permanently.
Oy vey. That is the least likely scenario.
If W is resigned to alienating his conservative base, he won't replace Miers. If he does replace her, it will be because he realizes he cannot afford to alienate conservatives. So there's no way he'd do so again by nominating Gonzales. That would seal the divorce between W and conservatives and turn him into an instant lame-duck.
Wasn't that who a lot of yall thought he wanted, to begin with?