I don't think moving Jeter is silly, it's just difficult because he's Jeter. He's one of the best of his generation at his position, one of the best players on his team, one of its most popular players, and a team leader. You know who else is all of those things? Mike Piazza. And he's switching positions. If Jeter cares as much about winning as he says he does, he should be willing to switch. And if Yankee management cares about winning, they should have at least talked to him about it.
The Yankees' biggest problem is defense, and Jeter is arguably the worst defensive SS in baseball. According to Ultimate Zone Rating, Jeter cost his team more runs defensively from 2000-2002 than anyone in baseball other than Aramis Ramirez. Admittedly, I don't know how he'd be at third, but his lack of range shouldn't be as much of a problem and he has a strong arm.

On to a team I care about, I don't like Millwood for the Mets. He's going to cost at least $11 mill a year. ERA the last 4 years:
4.66
4.31
3.24
4.01
Not worth the money.